Add strict mode and fix some jshint warnings

Gruntfile.js

@@ -9,7 +9,8 @@
       pkg: grunt.file.readJSON('package.json'),
       jshint: {
         options: {
-          newcap: false
+          newcap: false,
+          node: true
         },
         all: jsFiles
       },

src/config.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var settings;
 try {
     settings = require('./settings');

src/db.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var mongoose = require('mongoose');
 
 module.exports.setupConnection = function(config) {

src/eventnet.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var events = require('events');
 
 var SwiftCODEEventNet = function() {

src/models.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var mongoose = require('mongoose');
 var Schema = mongoose.Schema;
 var bcrypt = require('bcrypt');

src/routes.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var _ = require('lodash');
 var models = require('./models');
 
@@ -184,8 +186,8 @@ exports.addLang = function(req, res) {
     var langKey = req.body.key,
         langName = req.body.name,
         order = req.body.order,
-        projectCount = parseInt(req.body.projectCount),
-        exerciseCount = parseInt(req.body.exerciseCount),
+        projectCount = parseInt(req.body.projectCount, 10),
+        exerciseCount = parseInt(req.body.exerciseCount, 10),
         projectKey = getRequestArray('projectKey', projectCount),
         projectName = getRequestArray('projectName', projectCount),
         projectUrl = getRequestArray('projectUrl', projectCount),
@@ -235,7 +237,7 @@ exports.addLang = function(req, res) {
             }
 
             var projects = Array.prototype.slice.call(arguments, 1);
-            _.each(_.map(exerciseProject, function(p) { return parseInt(p); }), function(project, i) {
+            _.each(_.map(exerciseProject, function(p) { return parseInt(p, 10); }), function(project, i) {
                 exercises[i].project = projects[project]._id;
                 exercises[i].projectName = projects[project].name;
             });

src/server.js

@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+'use strict';
 
 var express = require('express');
 var io = require('socket.io');
@@ -268,6 +269,6 @@ var SwiftCODE = function() {
 };
 
 if (require.main === module) {
-    app = new SwiftCODE();
+    var app = new SwiftCODE();
     app.listen();
 }

src/settings.js.example.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var settings = {};
 
 // Note: most of these configuration options can be overridden

src/sockets.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var io = require('socket.io');
 var moment = require('moment');