Merge branch 'master' into calendar-auto-schedule

Conflicts:
	bin/migrateto20.php
	lib/CalDAV/Plugin.php
	tests/Sabre/DAVServerTest.php
	tests/bootstrap.php
Removed these broken and way old examples.
Updated changelog.
Using sabre/event 1.0.1
Releasing today.
Merge branch '2.0'

Conflicts:
	ChangeLog.md
Fix typo
Added phpcs + lots of cs fixes.
Less verbose
pathFilter() method is now callable
Test for #474
Invokable pathFilter() without using __call()
Updated changelog #474
Merge pull request #474 from DominikTo/property-storage-fix

PropertyStorage fix
pathFilter() method is now callable
Test for #474
Invokable pathFilter() without using __call()

Conflicts:
	lib/DAV/PropertyStorage/Plugin.php
Updated changelog #474

Conflicts:
	ChangeLog.md
Merge branch '2.0'
Removed item from 2.1 changelog