Merge branch 'ricotz/vala' into 'gnome-3-38'

See merge request !660

Don't alter or try to write [GtkChild] properties

See merge request !630

(cherry picked from commit ec4ced41)

30105fd4 Don't alter or try to write [GtkChild] properties
2fb9d461 Convert private properties into fields.

Merge branch 'fix-inspector-system-info' into 'gnome-3-38'

See merge request !653

Merge branch 'mjog/1079-mesage-id-from' into 'gnome-3-38'

See merge request !649

Merge branch 'mjog/1126-dot-stuffing' into 'gnome-3-38'

See merge request !648

Remove RFC822 long header newlines

See merge request !635

Merge branch 'mjog/draft-errors' into 'gnome-3-38'

See merge request !617

application-client: Check for null when getting os info

See merge request !651

(cherry picked from commit 58175487)

c524e177 application-client: Check for null when getting os info

Geary.Smtp.ClientService: Get default Message-Id domain from From

Closes #1079

See merge request !644

(cherry picked from commit 9bf73077)

bc7ec8dd Geary.Smtp.ClientService: Get default Message-Id domain from From

Fix email being sent truncated after a line starting with a dot.

Closes #1126

See merge request !647

(cherry picked from commit e99115e9)

1987582b Geary.Smtp.ClientConnection: Documentation fixes
cc5d4ffa Geary.Smtp.ClientSession: Ensure SMTP data is sent dot-stuffed

Fix 3.38 CI

See merge request !646

Michael Gratton authored Jan 14, 2021 and Michael Gratton committed Jan 28, 2021

The `webkit_settings_set_enable_plugins` method has been deprecated in
2.31, and calling it emits a warning which trips up the test suite.

Cherry picked from !624 commit 28921890

Remove "\n " sequences from RFC822 text before decoding so that any
long mailboxes/mailbox lists folded before the 80 char limit are
unfolded.

Fixes #1009

Remove "\n " sequences from RFC822 text before decoding so that any
long subject lines folded before the 80 char limit are unfolded.

Fixes #895

Misc draft management issues

Closes #858 and #1044

See merge request !613

(cherry picked from commit a21982ae)

6530c66e Geary.Imap.FolderSession: Fix null param critical with vala 0.50
6f1f94e5 Composer.Widget: Suppress unsupported draft folder messages
be793831 Geary.App.DraftManager: Wait for remote to be open in ctor
6d5b0bc5 Composer.Widget: Rework draft manager management
36daf801 Composer.Widget: Clean up set_save_to_override method signature
5533ae32 Composer.Widget: Hide save button by default