MUMUP-1200 & MUMUP-1232 : Make GA better

MUMUP-1200 : Make GA better for angular
MUMUP-1232 : Capture events for beta header

### Things that changed
+ You now see a page view when someone clicks on a different page inside of the angular app (example: going from the home page to the marketplace) 
+ You now get events (under category Beta) when someone clicks: feedback, back to classic, or read about change
+ Renamed errorService to miscService