There could be a runtime warning about passing NULL into a Glib function
when setting NULL value to Subject (aka when removing it). Check for that
case to avoid the runtime warning.

Closes #536

Closes #534

It's a folder where messages marked as Not-Junk in a real Junk
folder are restored to. When not set or not found, the Inbox is used.

Related to evolution#2697

Closes #518

Closes #498

Removing a header means the helper function is called with a NULL `value`
argument, but some functions using it do not accept NULL arguments and
print a runtime warning about it, thus check for the NULL-ness first.

Closes #531

Just a typo, the cache path is not "cache", but "cur".

The return value is a size of bytes transferred, where -1 indicates an error.

The "Outlook" OAuth2 service was not recognized as usable for IMAP
accounts with "outlook.com" or "hotmail.com" user mails, thus make
it explicit this OAuth2 service can be used for IMAP and SMTP with
outlook.com or office365.com servers. That way the autodiscovery
will set OAuth2 for both IMAP and SMTP automatically.

Related to evolution-ews#265

Rūdolfs Mazurs authored Mar 09, 2024 and Administrator committed Mar 09, 2024

(cherry picked from commit 7cfeb857)

Andi Chandler authored Mar 08, 2024 and Administrator committed Mar 08, 2024

(cherry picked from commit 5afb8e08)

The wiki.gnome.org might be removed in the future, thus replace
the URL with the new home.

- add helper function to get localized property value with properties
  filtered by the caller

- set in the WebDAV Notes backend a helper property to let the clients
  know the note text is a markdown, not a plain text

Related to evolution#2672

Closes #523