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And place a log call so we can gather exceptions to lose the
general exception in the future.

WindowsBuild: Install Gajim as a python package

See merge request !118

Make gajim a python module

See merge request !106

to work around the issue that the gajim module cannot be found

A jid can contain characters that are not allowed in an action name.
This creates a unique UUID4 for each MessageControl and uses it as
action name instead.

We can reuse the UUID for other actions that belong to the
MessageControl

Fixes #8636

It seems to be important to let all widgets realize and then
hide the ones we dont want to show, instead of not showing them
in the first place.