Merge pull request #271 from dpolivaev/master

Improvements for mailarchive and activity editor
Merge pull request #273 from dpolivaev/master

 	Don't submit the form on the Vorschlag button click
#270: Add author automatically
* Deleted unused membersAPI config
* Fixed test
Merge pull request #277 from fdeberle/announcements

Announcements: Add author automatically (#270)
When announcement.author not given (or empty), display 'automatisch'
Bug: Groups don't show any members whose email address is not all-lowercase.
Fix: We need to list the members by emails with case-insensitive search of emails => does not work with $in query...
Side-Effect: Fixed faulty mocking in test.
Merge pull request #278 from fdeberle/announcements

When announcement.author not given (or empty), display 'automatisch'
Merge pull request #279 from NicoleRauch/master

Bugfix: Groups don't show any members whose email address is not all-lowercase
Fixes for #269:
* Only one admin table for all announcements
* Field `author` is no longer mandatory
See comment https://github.com/softwerkskammer/NeuePlattform-Implementierung/pull/278#discussion_r5245112
Don't render a link if author is 'automatisch'
Merge pull request #280 from fdeberle/announcements

Announcements: Verwaltung-Nachrichten zwei Tabellen geht nicht (#269)
copying activity does not copy registered members anymore
Merge pull request #282 from leider/master

copying activity does not copy registered members anymore
Fixed icon in admin menu (#281)
Refactored date handling, unix timestamps are now more reliable
When saving convert fromDate to unix when it is a German date (happens in /administration/announcementTable)
Don't use moment library in view
Added missing space