Merge branches 'master' and 'staging' of github.com:Teknologforeningen/svaksvat into staging

Conflicts:
	memberedit.py
	memberedit.ui
Merge branch 'staging'

Conflicts:
	backend/listmodels.py
	svaksvatgui.py
Merge branch 'staging'

Conflicts:
	backend/listmodels.py
Merge branch 'staging'

Conflicts:
	ui/memberedit.py
Merge branch 'staging'
Merge branch 'experimental'
Correct setting of new member gender and birthdate
Implement simple treemodel.
WIP: treemodel