diff --git a/package-lock.json b/package-lock.json
index 62ebea6..df6197d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@types/chai": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-4.2.0.tgz",
+      "integrity": "sha512-zw8UvoBEImn392tLjxoavuonblX/4Yb9ha4KBU10FirCfwgzhKO0dvyJSF9ByxV1xK1r2AgnAi/tvQaLgxQqxA==",
+      "dev": true
+    },
+    "@types/cookiejar": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/@types/cookiejar/-/cookiejar-2.1.1.tgz",
+      "integrity": "sha512-aRnpPa7ysx3aNW60hTiCtLHlQaIFsXFCgQlpakNgDNVFzbtusSY8PwjAQgRWfSk0ekNoBjO51eQRB6upA9uuyw==",
+      "dev": true
+    },
+    "@types/node": {
+      "version": "12.7.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.7.2.tgz",
+      "integrity": "sha512-dyYO+f6ihZEtNPDcWNR1fkoTDf3zAK3lAABDze3mz6POyIercH0lEUawUFXlG8xaQZmm1yEBON/4TsYv/laDYg==",
+      "dev": true
+    },
+    "@types/superagent": {
+      "version": "3.8.7",
+      "resolved": "https://registry.npmjs.org/@types/superagent/-/superagent-3.8.7.tgz",
+      "integrity": "sha512-9KhCkyXv268A2nZ1Wvu7rQWM+BmdYUVkycFeNnYrUL5Zwu7o8wPQ3wBfW59dDP+wuoxw0ww8YKgTNv8j/cgscA==",
+      "dev": true,
+      "requires": {
+        "@types/cookiejar": "*",
+        "@types/node": "*"
+      }
+    },
     "abbrev": {
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.0.9.tgz",
@@ -66,6 +94,7 @@
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "kind-of": "3.2.2",
         "longest": "1.0.1",
@@ -359,9 +388,9 @@
       "dev": true
     },
     "bson": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/bson/-/bson-1.0.5.tgz",
-      "integrity": "sha512-D4SCtud6mlEb48kXdTHU31DRU0bsgOJ+4St1Dcx30uYNnf/aGc+hC9gHB/z0Eth8HYYs/hr0SFdyZViht19SwA==",
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-1.0.9.tgz",
+      "integrity": "sha512-IQX9/h7WdMBIW/q/++tGd+emQr0XMdeZ6icnT/74Xk9fnabWn+gZgpE+9V+gujL3hhJOoNrnDVY7tWdzc7NUTg==",
       "dev": true
     },
     "buffer": {
@@ -431,6 +460,17 @@
         "mongo-uri-builder": "1.0.3",
         "mongodb": "3.0.3",
         "mqtt-emitter": "1.2.4"
+      },
+      "dependencies": {
+        "mongodb": {
+          "version": "3.0.3",
+          "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.0.3.tgz",
+          "integrity": "sha512-BuYbPwjrIS/Ik/AUegjnYb8ncOa4dj8tzP4eSCsaqjP9yjmIWzzKrAXBY+s8xy6xkTJxgvbuTFub6cIwpmHRXQ==",
+          "dev": true,
+          "requires": {
+            "mongodb-core": "3.0.3"
+          }
+        }
       }
     },
     "caseless": {
@@ -465,16 +505,18 @@
       }
     },
     "chai-http": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/chai-http/-/chai-http-3.0.0.tgz",
-      "integrity": "sha1-VGDYA24fGhKwtbXL1Snm3B0x60s=",
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/chai-http/-/chai-http-4.3.0.tgz",
+      "integrity": "sha512-zFTxlN7HLMv+7+SPXZdkd5wUlK+KxH6Q7bIEMiEx0FK3zuuMqL7cwICAQ0V1+yYRozBburYuxN1qZstgHpFZQg==",
       "dev": true,
       "requires": {
-        "cookiejar": "2.0.6",
-        "is-ip": "1.0.0",
-        "methods": "1.1.2",
-        "qs": "6.5.1",
-        "superagent": "2.3.0"
+        "@types/chai": "4",
+        "@types/superagent": "^3.8.3",
+        "cookiejar": "^2.1.1",
+        "is-ip": "^2.0.0",
+        "methods": "^1.1.2",
+        "qs": "^6.5.1",
+        "superagent": "^3.7.0"
       }
     },
     "chalk": {
@@ -590,9 +632,9 @@
       "dev": true
     },
     "component-emitter": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz",
-      "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY=",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
+      "integrity": "sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg==",
       "dev": true
     },
     "concat-map": {
@@ -685,9 +727,9 @@
       "dev": true
     },
     "cookiejar": {
-      "version": "2.0.6",
-      "resolved": "https://registry.npmjs.org/cookiejar/-/cookiejar-2.0.6.tgz",
-      "integrity": "sha1-Cr81atANHFohnYjURRgEbdAmrP4=",
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/cookiejar/-/cookiejar-2.1.2.tgz",
+      "integrity": "sha512-Mw+adcfzPxcPeI+0WlvRrr/3lGVO0bD75SxX6811cxSh1Wbxx7xZBGK1eVtDf6si8rg2lhnUjsVLMFMfbRIuwA==",
       "dev": true
     },
     "core-js": {
@@ -1490,28 +1532,31 @@
       "dev": true
     },
     "form-data": {
-      "version": "1.0.0-rc4",
-      "resolved": "https://registry.npmjs.org/form-data/-/form-data-1.0.0-rc4.tgz",
-      "integrity": "sha1-BaxrwiIntD5EYfSIFhVUaZ1Pi14=",
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/form-data/-/form-data-2.5.0.tgz",
+      "integrity": "sha512-WXieX3G/8side6VIqx44ablyULoGruSde5PNTxoUyo5CeyAMX6nVWUd0rgist/EuX655cjhUhTo1Fo3tRYqbcA==",
       "dev": true,
       "requires": {
-        "async": "1.5.2",
-        "combined-stream": "1.0.5",
-        "mime-types": "2.1.18"
+        "asynckit": "^0.4.0",
+        "combined-stream": "^1.0.6",
+        "mime-types": "^2.1.12"
       },
       "dependencies": {
-        "async": {
-          "version": "1.5.2",
-          "resolved": "https://registry.npmjs.org/async/-/async-1.5.2.tgz",
-          "integrity": "sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=",
-          "dev": true
+        "combined-stream": {
+          "version": "1.0.8",
+          "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
+          "integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
+          "dev": true,
+          "requires": {
+            "delayed-stream": "~1.0.0"
+          }
         }
       }
     },
     "formidable": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/formidable/-/formidable-1.1.1.tgz",
-      "integrity": "sha1-lriIb3w8NQi5Mta9cMTTqI818ak=",
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/formidable/-/formidable-1.2.1.tgz",
+      "integrity": "sha512-Fs9VRguL0gqGHkXS5GQiMCr1VhZBxz0JnJs4JmMp/2jL18Fmbzvv7vOFRU+U8TBkHEE/CX1qDXzJplVULgsLeg==",
       "dev": true
     },
     "forwarded": {
@@ -1881,9 +1926,9 @@
       "dev": true
     },
     "ip-regex": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/ip-regex/-/ip-regex-1.0.3.tgz",
-      "integrity": "sha1-3FiQdvZZ9BnCIgOaMzFvHHOH7/0=",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/ip-regex/-/ip-regex-2.1.0.tgz",
+      "integrity": "sha1-+ni/XS5pE8kRzp+BnuUUa7bYROk=",
       "dev": true
     },
     "ipaddr.js": {
@@ -1902,7 +1947,8 @@
       "version": "1.1.6",
       "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-1.1.6.tgz",
       "integrity": "sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "is-builtin-module": {
       "version": "1.0.0",
@@ -1923,12 +1969,12 @@
       }
     },
     "is-ip": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/is-ip/-/is-ip-1.0.0.tgz",
-      "integrity": "sha1-K7aVn3l8zW+f3IEnWLy8h8TFkHQ=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/is-ip/-/is-ip-2.0.0.tgz",
+      "integrity": "sha1-aO6gfooKCpTC0IDdZ0xzGrKkYas=",
       "dev": true,
       "requires": {
-        "ip-regex": "1.0.3"
+        "ip-regex": "^2.0.0"
       }
     },
     "is-path-cwd": {
@@ -2135,6 +2181,7 @@
       "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
       "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
       "dev": true,
+      "optional": true,
       "requires": {
         "is-buffer": "1.1.6"
       }
@@ -2208,7 +2255,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "loose-envify": {
       "version": "1.3.1",
@@ -2350,12 +2398,28 @@
       "dev": true
     },
     "mongodb": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.0.3.tgz",
-      "integrity": "sha512-BuYbPwjrIS/Ik/AUegjnYb8ncOa4dj8tzP4eSCsaqjP9yjmIWzzKrAXBY+s8xy6xkTJxgvbuTFub6cIwpmHRXQ==",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.3.1.tgz",
+      "integrity": "sha512-Q92LLlPUTBj/Z4DyeznwPJjvgOYUcxZsBfek3Ba9mVhzH41n70vSubo+BmemI98kOefHTSncrTyb3OaxdLSgDw==",
       "dev": true,
       "requires": {
-        "mongodb-core": "3.0.3"
+        "bson": "^1.1.1",
+        "require_optional": "^1.0.1",
+        "safe-buffer": "^5.1.2"
+      },
+      "dependencies": {
+        "bson": {
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.1.tgz",
+          "integrity": "sha512-jCGVYLoYMHDkOsbwJZBCqwMHyH4c+wzgI9hG7Z6SZJRXWr+x58pdIbm2i9a/jFGCkRJqRUr8eoI7lDWa0hTkxg==",
+          "dev": true
+        },
+        "safe-buffer": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.0.tgz",
+          "integrity": "sha512-fZEwUGbVl7kouZs1jCdMLdt95hdIv0ZeHg6L7qPeciMZhZ+/gdesW4wgTARkrFWEpspjEATAzUGPG8N2jJiwbg==",
+          "dev": true
+        }
       }
     },
     "mongodb-core": {
@@ -2364,8 +2428,8 @@
       "integrity": "sha512-AkEiYeq4PZrgoKPZ32q2nL2xFe9iswOgefMipS2YHJHX8DCFAXmYr1aFxefAWisinxI/nd57nBMSe4mrm3yV1g==",
       "dev": true,
       "requires": {
-        "bson": "1.0.5",
-        "require_optional": "1.0.1"
+        "bson": "~1.0.4",
+        "require_optional": "^1.0.1"
       }
     },
     "mqtt-emitter": {
@@ -2877,7 +2941,8 @@
       "version": "1.6.1",
       "resolved": "https://registry.npmjs.org/repeat-string/-/repeat-string-1.6.1.tgz",
       "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "request": {
       "version": "2.83.0",
@@ -2956,8 +3021,8 @@
       "integrity": "sha512-qhM/y57enGWHAe3v/NcwML6a3/vfESLe/sGM2dII+gEO0BpKRUkWZow/tyloNqJyN6kXSl3RyyM8Ll5D/sJP8g==",
       "dev": true,
       "requires": {
-        "resolve-from": "2.0.0",
-        "semver": "5.5.0"
+        "resolve-from": "^2.0.0",
+        "semver": "^5.1.0"
       },
       "dependencies": {
         "resolve-from": {
@@ -3273,9 +3338,9 @@
       "integrity": "sha1-gIudDlb8Jz2Am6VzOOkpkZoanxo="
     },
     "string-format": {
-      "version": "0.5.0",
-      "resolved": "https://registry.npmjs.org/string-format/-/string-format-0.5.0.tgz",
-      "integrity": "sha1-v8SmmiUPF/Jz2XM2eX2vXcpuzzA="
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/string-format/-/string-format-2.0.0.tgz",
+      "integrity": "sha512-bbEs3scLeYNXLecRRuk6uJxdXUSj6le/8rNPHChIJTn2V79aXVTR1EH2OH5zLKKoz0V02fOUKZZcw01pLUShZA=="
     },
     "string-width": {
       "version": "2.1.1",
@@ -3349,54 +3414,51 @@
       "dev": true
     },
     "superagent": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/superagent/-/superagent-2.3.0.tgz",
-      "integrity": "sha1-cDUpoHFOV+EjlZ3e+84ZOy5Q0RU=",
-      "dev": true,
-      "requires": {
-        "component-emitter": "1.2.1",
-        "cookiejar": "2.0.6",
-        "debug": "2.6.9",
-        "extend": "3.0.1",
-        "form-data": "1.0.0-rc4",
-        "formidable": "1.1.1",
-        "methods": "1.1.2",
-        "mime": "1.4.1",
-        "qs": "6.5.1",
-        "readable-stream": "2.3.3"
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/superagent/-/superagent-3.8.3.tgz",
+      "integrity": "sha512-GLQtLMCoEIK4eDv6OGtkOoSMt3D+oq0y3dsxMuYuDvaNUvuT8eFBuLmfR0iYYzHC1e8hpzC6ZsxbuP6DIalMFA==",
+      "dev": true,
+      "requires": {
+        "component-emitter": "^1.2.0",
+        "cookiejar": "^2.1.0",
+        "debug": "^3.1.0",
+        "extend": "^3.0.0",
+        "form-data": "^2.3.1",
+        "formidable": "^1.2.0",
+        "methods": "^1.1.1",
+        "mime": "^1.4.1",
+        "qs": "^6.5.1",
+        "readable-stream": "^2.3.5"
       },
       "dependencies": {
-        "debug": {
-          "version": "2.6.9",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
-          "dev": true,
-          "requires": {
-            "ms": "2.0.0"
-          }
+        "process-nextick-args": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+          "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
+          "dev": true
         },
         "readable-stream": {
-          "version": "2.3.3",
-          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.3.tgz",
-          "integrity": "sha512-m+qzzcn7KUxEmd1gMbchF+Y2eIUbieUaxkWtptyHywrX0rE8QEYqPC07Vuy4Wm32/xE16NcdBctb8S0Xe/5IeQ==",
+          "version": "2.3.6",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
           "dev": true,
           "requires": {
-            "core-util-is": "1.0.2",
-            "inherits": "2.0.3",
-            "isarray": "1.0.0",
-            "process-nextick-args": "1.0.7",
-            "safe-buffer": "5.1.1",
-            "string_decoder": "1.0.3",
-            "util-deprecate": "1.0.2"
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
           }
         },
         "string_decoder": {
-          "version": "1.0.3",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-          "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+          "version": "1.1.1",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
           "dev": true,
           "requires": {
-            "safe-buffer": "5.1.1"
+            "safe-buffer": "~5.1.0"
           }
         }
       }