Small bugfixes
Small refactoring layerbar
Clean extern library structure
Small bugfixes
Add opacity slider to single blatt view
Small changes
Start updating georeference tool
Create the 4 control element
Small bugfixes
Georeferencer to ol3
Most work is done. But it's still buggy and also refactoring has to be done.
Zoomify 0.9
Zoomify switch on ol3 1.0
Merge branch 'zoomify'

Conflicts:
	env/vkviewer/static/js/ol3/tools/MesstischblattViewer.js
Small bugfixing
Update georenference histroy page
Release 18.2
Fix locale bug