* removes namespace param from activation flags endpoint in api client
* updates sync activation modal to use api service
* updates sync destination sync page to use api service
* removes ember data type deps from sync engine and updates tests
* updates sync activation modal to always override namespace header in activate request
* move sync activation and capabilities from flag service to version service and components
* cleanup unnecessary args
* remove permissions service
* un-nest (some) modules
* simplify overview test so logic is easier to follow
* modal test
* update service tests
* change back to 403 because maybe it is permissions related?
* fix tests running on CE
* small cleanup
* fix logic based on feedback
* add logic for hvd specifically, update cluster tests
* fix: show tier-releated error msg for HVD clusters upon sync activation
* fix: clear activation errors upon re-attempting to activate
* tests: ensure only 1 error banner shows for non HVD clusters
