[geary] (8 commits) Non-fast-forward update to branch wip/778728-split-composer

[Michael Gratton <mjog src gnome org>]

The branch 'wip/778728-split-composer' 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:

  456d3e9... Fix search loading spinner never disappearing when autosele
  c54d1e3... Give the insert inline image dialog a relevant title and bu
  3fc6d9b... Simply and update ComposerContainer interface and implement
  4b34891... Split body editing code in ComposerWidget into new Composer
  f364c6c... Fix some spacing issues with the composer toolbar and attac
  f81b557... Add new builder and source files to POTFILES.in.

Commits added to the branch:

  5f414b5... Updated Slovenian translation (*)
  d09b1d6... Fix search loading spinner never disappearing when autosele (*)
  dfd3355... Suppress some C compiler build warnings. (*)
  6aaca42... Give the insert inline image dialog a relevant title and bu
  86bea60... Simply and update ComposerContainer interface and implement
  2716163... Split body editing code in ComposerWidget into new Composer
  823e987... Fix some spacing issues with the composer toolbar and attac
  a261bc6... Add new builder and source files to POTFILES.in.

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