This reverts commit b9c363e9.

receive() returns bytes, not str

rework password interface. Fixes #8347

Closes #8347

See merge request !117

Use precis instead of stringprep when available. Fixes #8566

See merge request !116

Our loader cant load compiled sourcefiles

Not all Dialogs have a window instance, some inherit Gtk.Window

Redesign XML Console

See merge request !115

- Use modern GTK Widgets (HeaderBar, ActionBar, Switch)
- Add an option to filter Stream Management stanzas
- Add a generic Option Dialog that we can reuse later

run tests in gitlab-ci on every commits

See merge request !114

- Execute as script to save roundtrips

- Dont depend on get_jid_id(), this saves roundtrips

- This is added because even an ignored INSERT raises the
autoincrement value of the table.
This means the jid id gets high really fast.

- It should be where all other message received handlers are
- Port to new DB API

As we always load plugins from the user path first, we should not
reload them later from Gajims plugin base dir