prepared ical import
added calcifer option to forms
prepared sending to calcifer and grical
created sendToCalcifer method
first version of sendToCalcifer implementation. not working, yet
first working version
added code to submit link to calcifer
added notifications
added translations
increased version counter
altered calcifier url to production version
rearranged start and end time in detail view to be more  clearly
preparing for adding link to export notification (grical, calcifer)
adopted translation for notification string
added link to grical appointment to notification
added link to calcifer-crosspost notification
Merge branch 'devel'
increased version counter
Merge branch 'master' into icalimport

Conflicts:
	index.php
	templates/overview.php
added reply.html to git ignore