Optimize hackmd resource packing and load orders

package.json

@@ -26,15 +26,20 @@
     "diff-match-patch": "git+https://github.com/hackmdio/diff-match-patch.git",
     "ejs": "^2.5.2",
     "engine.io-client": "^1.7.0",
+    "emojify.js": "~1.1.0",
     "express": ">=4.14",
     "express-session": "^1.14.1",
     "file-saver": "^1.3.3",
     "flowchart.js": "^1.6.3",
+    "font-awesome": "^4.7.0",
     "formidable": "^1.0.17",
+    "gist-embed": "~2.6.0",
     "handlebars": "^4.0.5",
     "helmet": "^2.3.0",
+    "highlight.js": "~9.7.0",
     "i18n": "^0.8.3",
     "imgur": "git+https://github.com/hackmdio/node-imgur.git",
+    "ionicons": "~2.0.1",
     "jquery": "^3.1.1",
     "jquery-mousewheel": "^3.1.13",
     "jquery-textcomplete": "^1.7.3",
@@ -62,12 +67,15 @@
     "markdown-it-sub": "^1.0.0",
     "markdown-it-sup": "^1.0.0",
     "markdown-pdf": "^7.0.0",
+    "mathjax": "~2.7.0",
+    "mermaid": "~6.0.0",
     "meta-marked": "^0.4.2",
     "method-override": "^2.3.6",
     "moment": "^2.15.1",
     "morgan": "^1.7.0",
     "mysql": "^2.11.1",
     "node-uuid": "^1.4.7",
+    "octicons": "~3.5.0",
     "passport": "^0.3.2",
     "passport-dropbox-oauth2": "^1.1.0",
     "passport-facebook": "^2.1.1",
@@ -129,6 +137,7 @@
     "babel-loader": "^6.2.5",
     "bower": "^1.7.9",
     "bower-webpack-plugin": "^0.1.9",
+    "copy-webpack-plugin": "^4.0.1",
     "css-loader": "^0.25.0",
     "ejs-loader": "^0.3.0",
     "exports-loader": "^0.6.3",