Small page control change
Merge branch 'widget' of github.com:ynh/EWF into widget
Merge branch 'widget' of github.com:ynh/EWF into widget
Moved set_attributes from BASIC_CONTROL to STATELESS_CONTROL
ATTENTION: ugly append_attributes added to stateless control, replaces set_attributes -> maybe improve
Removed add_dropdown methods from navbar, some cleanup in different controls
Added precondition in layout control