JOINDIN-243 Remove the button and the relevant javascript
JOINDIN-243 Delete the event/Claim controller and the event claim view
JOINDIN-243 Remove references to Event Claims

I removed the link in the nav sidebar and then removed all references
to pending events.
Remove uses of console in JS.

JOINDIN-445 #close Fixed.
Merge branch 'martynthewolf-JOINDIN-243'
Merge branch 'akrabat-remove-console-calls'