(CR) Add week forward and prev buttons
(CDB) Optimize export dialog and add group exporter
(CDB) Further export optimization, e.g. add groupmemberstatus
(CDB) Fix german wording
Merge branch 'master' of https://github.com/renarena/churchtools_basic into renarena-master

Conflicts:
	system/churchdb/cdb_personview.js
Merge branch 'renarena-master'
(CS) Add enough space to display option icon
(CS) Add ProPresenter Export
(CS) Make event info editable directly
(CDB) Fix bug in external map view
Fix i18n bug in Auth Module
(CDB) Add empty col to export when it is in template
(CRP) Fix problem with prefix in databasetables
Update README.md
Update README.md
Avoid parallel cron jobs
Merge branch 'master' of https://github.com/churchtools/churchtools_basic
Optimize the rendering of filenames
Merge branch 'master' of https://github.com/renarena/churchtools_basic into renarena-master

Conflicts:
	system/churchcore/churchcore_db.inc
Merge branch 'renarena-master'