[geary: 7/7] Merge branch 'wip/update-shortcuts' into 'mainline'

[Michael Gratton <mjog src gnome org>]

commit 074c3e38ee812a8102f1ebd30dc951ac9386ad39
Merge: cffe491f 658ba575
Author: Michael Gratton <mike vee net>
Date:   Sun Jul 21 15:51:15 2019 +0000

    Merge branch 'wip/update-shortcuts' into 'mainline'
    
    Update keyboard shortcuts
    
    See merge request GNOME/geary!269

 src/client/application/application-controller.vala |  30 +-
 .../conversation-list/conversation-list-view.vala  |  33 +++
 src/client/folder-list/folder-list-tree.vala       |  16 --
 src/engine/rfc822/rfc822-part.vala                 |   1 -
 ui/gtk/help-overlay.ui                             | 309 +++++++++++++++------
 5 files changed, 283 insertions(+), 106 deletions(-)
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