[geary: 5/5] Merge branch 'mjog/shortcut-updates' into 'mainline'

[Michael Gratton <mjog src gnome org>]

commit 3315bbc84ac63a3684e572f4299c76f10de910a1
Merge: 1ad29a9be 7ec99e1f6
Author: Michael Gratton <mike vee net>
Date:   Fri Jan 8 07:16:10 2021 +0000

    Merge branch 'mjog/shortcut-updates' into 'mainline'
    
    Implement F10 keyboard shortcut
    
    Closes #1102
    
    See merge request GNOME/geary!621

 src/client/application/application-client.vala     |    3 +-
 .../application/application-main-window.vala       |   19 +-
 src/client/client-action.vala                      |    3 +-
 src/client/components/main-toolbar.vala            |    5 +
 src/client/composer/composer-widget.vala           |   13 +-
 ui/gtk/help-overlay.ui                             | 1026 ++++++++++----------
 6 files changed, 555 insertions(+), 514 deletions(-)
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