Resolve "Review and fix/improve PWA behaviour and serviceworker"

Closes #230 (closed)

aleksis/core/static/js/serviceworker.js

@@ -12,7 +12,7 @@ const avoidCachingPaths = [
     '/admin',
     '/settings',
     '/accounts/login'
-]; // TODO: More paths are needed
+];
 
 function pathComparer(requestUrl, pathRegEx) {
     return requestUrl.match(new RegExp(pathRegEx));