Update npm dependencies

Author: jackycute

package.json

@@ -5,55 +5,55 @@
   "main": "app.js",
   "license": "MIT",
   "dependencies": {
-    "async": "^2.0.0-rc.3",
+    "async": "^2.0.0-rc.6",
     "blueimp-md5": "^2.3.0",
-    "body-parser": "^1.15.0",
-    "chance": "^1.0.2",
+    "body-parser": "^1.15.1",
+    "chance": "^1.0.3",
     "cheerio": "^0.20.0",
-    "compression": "^1.6.1",
+    "compression": "^1.6.2",
     "connect-session-sequelize": "^3.0.0",
-    "cookie": "0.2.3",
-    "cookie-parser": "1.4.1",
-    "ejs": "^2.4.1",
+    "cookie": "0.3.1",
+    "cookie-parser": "1.4.3",
     "diff-match-patch": "^1.0.0",
+    "ejs": "^2.4.2",
     "emojify.js": "^1.1.0",
     "express": ">=4.13",
     "express-session": "^1.13.0",
     "formidable": "^1.0.17",
-    "helmet": "^1.3.0",
-    "highlight.js": "^9.3.0",
+    "helmet": "^2.1.1",
+    "highlight.js": "^9.4.0",
     "imgur": "^0.1.7",
     "jsdom-nogyp": "^0.8.3",
     "lz-string": "1.4.4",
     "markdown-pdf": "^7.0.0",
     "marked": "^0.3.5",
     "meta-marked": "^0.4.1",
-    "method-override": "^2.3.5",
-    "moment": "^2.12.0",
+    "method-override": "^2.3.6",
+    "moment": "^2.13.0",
     "morgan": "^1.7.0",
-    "mysql": "^2.10.2",
+    "mysql": "^2.11.1",
     "node-uuid": "^1.4.7",
     "passport": "^0.3.2",
-    "passport-dropbox-oauth2": "^1.0.0",
-    "passport-facebook": "^2.1.0",
+    "passport-dropbox-oauth2": "^1.1.0",
+    "passport-facebook": "^2.1.1",
     "passport-github": "^1.1.0",
     "passport-gitlab2": "^2.2.0",
     "passport-google-oauth20": "^1.0.0",
     "passport-twitter": "^1.0.4",
     "passport.socketio": "^3.6.1",
-    "pg": "^4.5.3",
+    "pg": "^5.1.0",
     "pg-hstore": "^2.3.2",
     "randomcolor": "^0.4.4",
     "request": "^2.72.0",
-    "reveal.js": "3.2.0",
-    "sequelize": "^3.21.0",
+    "reveal.js": "3.3.0",
+    "sequelize": "^3.23.3",
     "sequelize-cli": "^2.4.0",
     "shortid": "2.2.6",
-    "socket.io": "1.4.5",
-    "sqlite3": "^3.1.3",
+    "socket.io": "1.4.6",
+    "sqlite3": "^3.1.4",
     "string": "^3.3.1",
     "tedious": "^1.14.0",
-    "toobusy-js": "^0.4.3",
+    "toobusy-js": "^0.5.0",
     "winston": "^2.2.0"
   },
   "engines": {