Fix additional_data in events

See merge request gajim/gajim!146

Plugins or other code can pass custom Options

Fixes #8773

This also adds that Gajim gets present if Gajim is launched a second time

Its enough to connect to the handle-local-options signal for what we
currently want to do.

If the JID is not in the DB we need a type to insert

New Style for Chat Windows

See merge request gajim/gajim!144

- Move ActionBar into HeaderMenu
- Make Design of ChatControl look cleaner
- Hide the Roster in Groupchats per default
- Add Button to hide/show Roster in Groupchats
- Move Groupchat topic into popover
- Display Avatars on the right side of the ChatControl and status on the
left
- Add a default Avatar for contacts that have none

the account name was passed instead of the account jid

- make it use get_jid_id() and return the jid_id

Use _jid_ids dict instead

- Cache jid_id so we save on DB querys

A special Client only publishes Images in this Format

Fixes #8762