account view, ModelChoiceField of costcenter, modify form layout

schoolapps/dashboard/models.py

schoolapps/fibu/admin.py

schoolapps/fibu/forms.py

schoolapps/fibu/models.py

schoolapps/fibu/templates/fibu/account/edit.html

schoolapps/fibu/templates/fibu/account/index.html

schoolapps/fibu/templates/fibu/booking/check.html

schoolapps/fibu/templates/fibu/booking/edit.html

schoolapps/fibu/templates/fibu/costcenter/edit.html

schoolapps/fibu/templates/fibu/costcenter/index.html

schoolapps/fibu/templates/fibu/index.html

schoolapps/fibu/urls.py

schoolapps/fibu/views.py

schoolapps/templates/partials/header.html