Initial simple working algorithm for the threshold-slider.

Remove duplicate-states in the crawl-overview for the threshold given
by the slider.
Save onNewState the distance to all other states in sfg
Save a list of states in which order the where inserted in the sfg
Implement the callback of the threshold-slider
Implemented new thresholdslider-function, which uses the distance-table from the json-file

features:
- Deletes fragemented graphs
- Doesn't need presorted arrays
Additionally this commit:
+ Use the state-name as reference in the json
+ Removed the hashes and minDuplicateDistance from the json