[geary: 4/4] Merge branch 'mjog/424-remove-empty-folder-menu-items' into 'mainline'

[Michael Gratton <mjog src gnome org>]

commit 18e70b0fe865063b721d9af4aa72912bf8c02e85
Merge: 6dd2d1bc 8b474fa5
Author: Michael Gratton <mike vee net>
Date:   Mon Mar 30 04:36:12 2020 +0000

    Merge branch 'mjog/424-remove-empty-folder-menu-items' into 'mainline'
    
    Remove empty trash/spam menu items
    
    Closes #424
    
    See merge request GNOME/geary!448

 src/client/application/application-controller.vala |  10 +-
 .../application/application-main-window.vala       |  73 +++---------
 .../application/application-plugin-manager.vala    |  37 +++++++
 src/client/plugin/meson.build                      |   1 +
 src/client/plugin/plugin-application.vala          |  16 +++
 src/client/plugin/special-folders/meson.build      |  26 +++++
 .../special-folders/special-folders.plugin.in      |   3 +
 .../plugin/special-folders/special-folders.vala    | 123 +++++++++++++++++++++
 ui/main-toolbar-menus.ui                           |  10 --
 9 files changed, 226 insertions(+), 73 deletions(-)
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