implement color picking from predefined set for category badges + option to change foreground color
extracted hard coded strings in the admin javascript files
Merge pull request #465 from ZogStriP/extracted-hard-coded-string-in-admin-javascript-files

extracted hard coded strings in the admin javascript files [ci skip]
Big commit:
- Support for a popup that shows similar topics
- Cleaned up a lot of Javascript
- Cleaned up use of Promises
We are randomly seeing the wrong serializing used in test. Trying to revert
this to see if it is the cause.

Revert "see: https://github.com/rails-api/active_model_serializers/pull/233"

This reverts commit 2a5cbd8072e8cef15d143267d66c8d8fd5563e79.
FIX: Twitter tags were using `property` instead of `name`.
Slightly offset the second popup if two are on at once
Merge pull request #462 from kubabrecka/colorpicker3

implement color picking from predefined set for category badges + option to change foreground color