Use BSD license to match Sabre.
Visibility fixed in next release.
Merge future additions from upstream.
Add Horde_Dav_Client.
[jan] Use Horde_Dav for accessing remote calendars.
Merge branch 'master' into caldav

Conflicts:
	kronolith/docs/CHANGES
	kronolith/package.xml
Merge remote-tracking branch 'origin/master' into caldav
Implement authentication.
phpdoc
Visibility
Implement classes for WebDAV browsing.
[jan] Use Horde_Dav for DAV RPC backends.
Merge remote-tracking branch 'origin/master' into caldav
Better variable name.
Add locking.
Merge remote-tracking branch 'origin/master' into caldav
Simplify
Determine real size if we built the contents anyway.
Add browser plugin.

Allows browsing through the DAV collections by accessing the RPC endpoint with
a web browser.
Default to serve via WebDAV.

We used to default to SOAP because the old SOAP backend supported DISCO.