Merge pull request #853 from jemproject/development

Fixes from development branch for JEM 2.0.3 - mailer, attendee, cb plugins
Merge pull request #856 from jemproject/development

Fix from development branch for JEM 2.0.3 - auto-created unpublished events
Merge pull request #858 from jemproject/development

Altered AcyMailing Plugin - merged to get the new language file available for transifex.
Update tagjem.php

replaced my name with JEM community
Update tagjem_event.php
Update tagjem_list.php
Update tagjem_summary.php
some file header adaption (e.g. #859)
Merge pull request #861 from jemproject/development

AcyMailing plugin: some file header adaption (e.g. #859)
backend: minor changes regarding import, radio buttons, order column in lists
frontend: better styling of filters, edit forms, show status column icons
package version set to 2.1.0 RC1

- checked on J! 2.5 and J! 3.3 beez3 + protostar
Merge remote-tracking branch 'remotes/origin/master' into dev21