Removed code related to owncloud
Created by: morrme
Fixes #818 (closed)
I removed code and text related to owncloud, including forms that had great TODO notes pointing out that they could be removed when owncloud support was dropped (thanks!)
Remaining owncloud mentions:
CHANGELOG.md
doc/freedombox-manual.xml
...and the locales. (should relevant messages in those files be removed too?)