work in progress
work in progress ...
Merge branch 'develop' into feature/smoothgraph

Conflicts:
	static/js/service.js
Better formatting
Empty service
Removed not useful debug output
Moved loadGraphData
removed unnecessary assignment that lead to duplicate nodes
extracted svg construction to template
some fixes to loadGraphData
somehow made combination of graphDataService and graph directive work
some fixes and moved some parameters to graphDataService
some bugfixes
nodes are now correctly removed and links are always below nodes
some reordering
fixed displaying of active node
some css optimization for graph
refactored piechart
partially solved the problem that the graph should be updated when following the mainNode
fixed live-updates for graph if active node follow status changes