Added a new normalized degree for display

THis is technically the correct method by which normalized Degree should be calculated.
Added possibilty to get details of RandomWalk

show charts and details of random walk after choose from dataName list
Added random walk to dataname list
added new boolean to statistic choice
Progress Bar, Threaded processing, Randomwalk data display fixed normalization

* Fixed normalization after scaling for vertex visit data
* Added progress bar
* Multi threaded implementation for neater application
* Fixed minor bug in random and all selection so that random walk isn't selected
TODO : Only three statistic handlers have been updated so far.