owncloud/calendar — pull request #494 by suraia (2014-07-25 21:52:34+00:00)
Title: Fix activation of shared calendars.

Editing shared calendars deactivates them and it is impossible to
activate them afterwards.

There are actually two problems:
- Shared calendars are deactivated when editing because they are
missing their checkbox. Consequently, the checked status can not
be read and the update function sets it to 0.
- As shared calendars do not have a checkbox, it is not possible to
toggle their activation state afterwards.

This change adds a checkbox for shared calendars and allows their
activation, fixing both problems.