updated manifest according to review

- removed "defaul-branch"
- use flathub shared-modules for Python 2
- removed libxslt has it is in freedesktop runtime
- added `content_rating` to appdata, the flatpak test is failing without
it
- use Twisted 19.2.1 (latest one being causing trouble)

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "shared-modules"]
+	path = shared-modules
+	url = https://github.com/flathub/shared-modules.git

org.salutatoi.Jp.appdata.xml

@@ -51,4 +51,9 @@
       <url>https://www.goffi.org/b/N29CuUQS4U4TK36JFuTQ5Q/salut-commune</url>
     </release>
   </releases>
+  <content_rating type="oars-1.1">
+    <content_attribute id="social-chat">intense</content_attribute>
+    <content_attribute id="social-audio">intense</content_attribute>
+    <content_attribute id="social-contacts">intense</content_attribute>
+  </content_rating>
 </component>

org.salutatoi.Jp.json

@@ -1,6 +1,5 @@
 {
     "app-id": "org.salutatoi.Jp",
-    "default-branch": "0.7.0",
     "runtime": "org.freedesktop.Platform",
     "runtime-version": "18.08",
     "sdk": "org.freedesktop.Sdk",
@@ -11,40 +10,7 @@
         "--filesystem=home"
     ],
     "modules": [
-        {
-            "name": "python",
-            "config-opts": [
-                "--enable-deterministic-archives",
-                "--disable-static",
-                "--enable-shared",
-                "--with-ensurepip=yes",
-                "--with-system-expat",
-                "--with-system-ffi",
-                "--enable-loadable-sqlite-extensions",
-                "--with-dbmliborder=gdbm",
-                "--enable-unicode=ucs4"
-            ],
-            "post-install": [
-                "chmod 644 /app/lib/libpython2.7.so.1.0"
-            ],
-            "sources": [
-                {
-                    "type": "archive",
-                    "url": "https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tar.xz",
-                    "sha256": "f222ef602647eecb6853681156d32de4450a2c39f4de93bd5b20235f2e660ed7"
-                }
-            ]
-        },
-        {
-            "name": "libxslt",
-            "sources": [
-                {
-                    "type": "archive",
-                    "url": "ftp://xmlsoft.org/libxml2/libxslt-1.1.33.tar.gz",
-                    "sha256": "8e36605144409df979cab43d835002f63988f3dc94d5d3537c12796db90e38c8"
-                }
-            ]
-        },
+        "shared-modules/python2.7/python-2.7.json",
         {
             "name": "setuptools",
             "buildsystem": "simple",
@@ -54,8 +20,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://files.pythonhosted.org/packages/68/0c/e470db6866aedbff3c4c88faf7f81b90343d8ff32cd68b62db1b65037fb4/setuptools-41.1.0.zip",
-                    "sha256": "c519b84c299911fd94ef47e3de4fe678c254aefc5cdf8a9b12e4cdc8cc3744a8"
+                    "url": "https://files.pythonhosted.org/packages/d9/ca/7279974e489e8b65003fe618a1a741d6350227fa2bf48d16be76c7422423/setuptools-41.2.0.zip",
+                    "sha256": "66b86bbae7cc7ac2e867f52dc08a6bd064d938bac59dfec71b9b565dd36d6012"
                 }
             ],
             "ensure-writable": [
@@ -840,8 +806,8 @@
             "sources": [
                 {
                     "type": "archive",
-                    "url": "https://files.pythonhosted.org/packages/61/31/3855dcacd1d3b2e60c0b4ccc8e727b8cd497bd7087d327d81a9f0cbb580c/Twisted-19.7.0.tar.bz2",
-                    "sha256": "d5db93026568f60cacdc0615fcd21d46f694a6bfad0ef3ff53cde2b4bb85a39d"
+                    "url": "https://files.pythonhosted.org/packages/79/59/035de19362320e632301ed7bbde23e4c8cd6fc5e2f1cf8d354cdba857854/Twisted-19.2.1.tar.bz2",
+                    "sha256": "fa2c04c2d68a9be7fc3975ba4947f653a57a656776f24be58ff0fe4b9aaf3e52"
                 }
             ],
             "ensure-writable": [
@@ -1221,7 +1187,7 @@
                 {
                     "type": "file",
                     "path": "org.salutatoi.Jp.appdata.xml",
-                    "sha256": "3db8cf76477a4667e94c7d84ade91282669e2662e2efd4d06e8dd78ab325b1bf"
+                    "sha256": "a71a5c82f76936b36cb80f3e7b132393839e964dac5412d612a096bc0347bda1"
                 }
             ]
         },