New data structure try 2: Prepared new function in mixin_vistoms.py to send...

New data structure try 2: Prepared new function in mixin_vistoms.py to send the schema data as an array of xPaths. d3.js data structure for tree view can be created within VISTOMS.html itself (this still needs to be done)


Former-commit-id: d52b3a0cc9445ef369397dbb702b11c3d35bb19c