- Complete rewrite of the old Groupchat dialog
- Has now a "minimal" mode, which is used if we have all infos for joining except the nickname and if we want to bookmark
- Handle xmpp uris received via command line

Clients should only upload square sized avatars

argument)

Fix appearance of status icon in MATE

Closes #8757

See merge request gajim/gajim!163

Tested in Debian testing (Buster) with gtk2 based MATE 1.12,
gtk3 based 1.16 and 1.18.

Moreover the used environment variable is depreacated already in 1.12:
$ echo $MATE_DESKTOP_SESSION_ID
this-is-deprecated

Fixes #8757

refactor the way we call SQL

See merge request gajim/gajim!162

used (-xyz instead of +xyz)

implement XEP-0156

Closes #5795

See merge request gajim/gajim!154

Refactor SpellChecker

See merge request gajim/gajim!159

- use Gspell instead of GtkSpell, it seems to have alot less problems
and needs less code

New version scheme

Also log the offending JID on avatar decoding issue

See merge request gajim/gajim!158

We changed the version format

Mac and Windows dont have dbus available

Fix invalid dev version string

See merge request gajim/gajim!157

Desktop files: add information for translators

See merge request gajim/gajim!156

Create desktop and appdata files in build directory

See merge request gajim/gajim!155

This was somehow lost once we implemented random resource strings
Although its good that initally a random resource is chosen, it
still should persist across sessions.

This helps to kill zombie client connections on the server because
most servers kill the old session once a new with the same resource
connects

Also dont notify the user about resource conflicts if no custom
resource is set. We should not expect users to know about resources
and what they are used for as long as possible.

Add MAM for MUCs

See merge request gajim/gajim!152

A stanza-id is only unique within a specific archive
This adds the archive jid to the query