Merge tag 'v0.2.7' into develop

New experiments:
 - IsImageCorrect
 - IsImageCorrectOneExtract
New features:
 - Start experiment with random scene button
 - Removed all WebSockets connections and replacing with an API route
 - Support experimentConfig.default.js config if none found in experimentConfig.js
 - Added webapp custom link configuration support
 - Added webapp custom link configuration generator `/linkGenerator`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "expe-web",
-  "version": "0.2.4",
+  "version": "0.2.7",
   "private": true,
   "scripts": {
     "server:start": "node -r esm index.js",