[geary] (17 commits) Created branch mjog/email-templates

[Michael Gratton <mjog src gnome org>]

The branch 'mjog/email-templates' was created.

Summary of new commits:

  fdf303b... Application: Rename plugin context objects to make their us
  2392361... Application.AccountContext: Break out unto standalone sourc
  c6076cf... Application.FolderContext: New class for aggregating client
  9e7f21d... Sidebar.Entry: Coalesce multiple entry changed signals into
  88efae7... FolderList.FolderEntry: Emit `::entry_changed` on folder co
  3c44f65... Application.AccountContext: Add signals for folder context 
  0167b70... Application: Pass Controller instance to to plugin objects 
  93cba35... Application.FolderStoreFactory: Convert to using app & fold
  a02297d... Geary.Folder: Add `SpecialUse.CUSTOM` and `set_used_as_cust
  7fb05f3... Plugin.Error: Add NOT_SUPPORTED type
  bbbafad... Plugin.FolderPluginContext: Support registering special use
  13fe0a9... Plugin: Add new Composer object and Application.new_compose
  ca85879... Application.PluginManager: Move plugin account mgmt from fo
  51fe125... Plugin.EmailIdentifier: Add `account` property
  caf9f44... Minor doc comment updates
  a0225f6... Application.PluginManager: Use AccountContext keys for acco
  8cf82b1... Application.FolderStoreFactory, EmailStorefactory: Remove c