Added account/token saving via OAuth2.
Add 'comment posted successfully' string.
Added postJSONFullUri method for APIv2.
Added posting to event comments.
NB this relies on https://github.com/joindin/joindin-api/pull/16 being merged presently.
Added base method to check authentication.
Use new isAuthenticated() method for 'anon' text.
Add auth details into requests if present.
Refactored JIRest to provide ability to send DELETE.
AddComment uses new post method.
Updated event-attending to use API v2.
Attending checkbox is enabled/disabled accordingly.
Remove anonymous text on comments.
Talk comments, and slight static int refactoring.
Event 'add' comment' button only visible when authd.
Reformat code.
Reformatted Add Comment buttons.
Merge branch 'api-v2-auth-activities'