regterschot FE

Pull request #25: GraphsOnTabs

Merge in SMAL/regterschot-fe from GraphsOnTabs to master

* commit 'dc6d97bab928ceebe0409a2a118b55a108f91985':
  fixed comments
  changes
  tabs change
  Finished the drawing of graphs on tabs
  Graphs almost completely dynamic
  Finished up graphs and started with small fixes
  making sure that the right graphs on tabs are loaded