Add notification dashboard module.

Jira issue: wp-1196
Update notifications to support invites.

And add the zoneNotification service.

Jira issue: wp-1196
Add use of displayName to distinguish services.

Also change semantics of contains() method to be more intuitive.

Jira issue: wp-1253
Changed to use id to distinguish services

Jira issue: wp-1253
Merge pull request #51 from TobyEalden/wp-1196-invite-merge

Wp 1196 invite merge
Merge pull request #52 from TobyEalden/service-disco-fix

Add use of displayName to distinguish services.