fix(ot): add minified updated OT library and build:ot script

Signed-off-by: Erik Michelson <github@erik.michelson.eu>

package.json

@@ -14,6 +14,7 @@
     "dev": "webpack --config webpack.dev.js --progress --watch",
     "heroku-prebuild": "bin/heroku",
     "build": "webpack --config webpack.prod.js --progress",
+    "build:ot": "bash -c \"cd public/vendor/ot && ./compress.sh\"",
     "start": "node app.js"
   },
   "dependencies": {
@@ -196,6 +197,7 @@
     "spin.js": "4.1.2",
     "string-loader": "0.0.1",
     "turndown": "7.2.2",
+    "uglify-js": "3.19.3",
     "url-loader": "4.1.1",
     "velocity-animate": "1.5.2",
     "visibilityjs": "2.0.2",