Bug fixing

Started preparing for release.
Reviewed the bugs reported until now, closed fixed bugs. 49 more bugs remained to be fixed from which 10 with higher priority.
Reviewed and finalized the polyline tool so that it automatically generates faces if a closed shape is drawn, also registered the polyline on solver so that magic points are detected on it.
Started investigating on the extrude on an automatic generated face that currently doesn't work. The problem might be related to transforms, the IsSame method doesn't return true when a shape from scene is compared with the shape from data tree because the one from scene has a transformation applied on it.