Merge pull request #215 from NicoleRauch/master

Mailversand
sending mails only for registered members
not showing email addresses anymore
Merge pull request #216 from leider/master

kleinkram für mailsending
fixed access rule for activity registration
Merge pull request #217 from leider/master

minor changes with frontendtests
Users should be able to edit their profile even with blanks in nickname

Fixes
https://github.com/softwerkskammer/NeuePlattform-Implementierung/issues/
219
Merge remote-tracking branch 'upstream/master'
Merge pull request #220 from leider/master

bugfix
use sinon sandbox in memberstore tests
refactor memberstore_tests and fix bug : call trim() in getMember()
add method getMembersForIds to memberstore
add function getMembersForIds to membersAPI
use only one call to database for obtaining all member nicks for mails in the list
remove unused require and fix inconsistent returns
tests and improvements for mailarchiveAPI
use improved mailarchiveAPI in the app
fix array comparison in test using JSON.stringify
threaded mail index
Add links to switch between threaded and not threaded representations