feat(Recommendation List): done | tweaks(a lot of stuff):

Recommendation list:

• Focus on performance with silent state update (and no hook)
• Whole logic and componets working
• Updated few stuff in the back
• Complete validation of the recommendation list json content (and tests for most of it)
• Compute universities from the JSON on save

Fixes #34 (closed) Fixse #127 (closed)

Tweaks:

• Reworked downshift multiple
• Reworked selected and multislect field to use downshift multiple when there are too many options
• Fixed wrong used of do_before_save
• Drop use of redux for filter; switch to static handling of part of the state: much more natural

Fixes #125 (closed)

Other: New components: CopyToClipBoard, LinkToUser, onBlurContainer, SimplePopupMenu Updated SaveButton