[gnome-calendar] (10 commits) Non-fast-forward update to branch mcatanzaro/add-calendar

[Michael Catanzaro <mcatanzaro src gnome org>]

The branch 'mcatanzaro/add-calendar' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  72c022a... new-calendar-page: improve URI validity check
  172c598... new-calendar-page: properly track state of URL entry and Ad
  2972471... new-calendar-page: add support for webcal:// links

Commits added to the branch:

  e816657... calendar-monitor: fix unused variable warning (*)
  164ec86... calendar-monitor: Fix critical in finalize (*)
  6586c87... calendars-page: Add already connected calendars on startup (*)
  93542e8... timeline: Add already cached events to new subscribers (*)
  e4debb9... views: Free GDateTimes with g_date_time_unref() (*)
  fa0173e... window: Remove subscribers on destroy (*)
  aaab4af... timeline: Respond well to subscriber removal (*)
  bba6c60... new-calendar-page: improve URI validity check
  7a3db41... new-calendar-page: properly track state of URL entry and Ad
  8520e18... new-calendar-page: add support for webcal:// links

(*) This commit already existed in another branch; no separate mail sent