changed skeletonFrame to frame in identifySkeletons
get methods for skeleton position object
getting the correct skeleton for finding the position (patient)
added parameters to skeleton position
changed int x and y for scanner position, to double
Revert "changed int x and y for scanner position, to double"

This reverts commit 0befc01284854f31228745436fd5c6889ad3c219.
insertion methods finished
selection methods for all tables (in selection class)
wrote the main methods for half the queries
automated id column

compound key for PatientCondition, PatientScans, PointRecognitionScans and Records tables
fixed existing selection methods to work with changes to tables
all selection methods done

insertion and selection for new table (limb coordinates) added
updated database engine with new methods, better encapsulation of selection query data.
Merge branch 'master' of github.com:WarwickPARSE/parse-client

Conflicts:
	PARSE/Tracking/SensorTracker.cs