AIS_LengthDimension interface was extended to allow setting a custom dimension direction.
The value of dimension in this case is equal to projection of the distance between dimension attributes(points) to this direction.
vlengthparam command is implemented to set custom length direction in DRAW.
Create a general draw command 'VRelation' and drop the old 'relation' commands.
Add test cases for new draw command "vrelation".
Add two new methods: Activate and Deactivate which activate/deactivate the given selection mode for all displayed objects.
Eliminate deprecated local context methods in ObjectCommands, QABugs.
Eliminate deprecated local context methods in mfc standard sample and qt samples.