Functions to perform simple map matching for labeling purposes
Using segments instead of nodes. Simple algorithm finished.
Ran algo with 50m max radius
Fixed small bug in getting node ids
Added a rough version of transition probabilities and viterbi.
Commit to merge
Merge branch 'master' of https://github.com/juhanaka/kartoffel into Youssef

Solved conflicts:
	emission_probability.py
	simple_match.py
	utils.py
Moved files around.
Merge branch 'master' of https://github.com/juhanaka/kartoffel into Youssef
Minor change to the db_wrapper
minot change to wrapper + more GPS data
Added run viterbi
Merge branch 'master' of https://github.com/juhanaka/kartoffel into Youssef
Merge new viterbi method