Changed pixels per scale from 3 to 2. Fix #10
Clean ups
Added special controller for every Desktop. Log's dialog now belong to it's parent Desktop
Work on fix #12 (DRAFT)
Fix log output (close #12)
Fix console output while click on Desktop
Add status bar (close #14)
Fix bug with line's generation log (again close #12)

If x of endPoint lager when x of startPoint coordinates in log output
was incorrect
Update draw method

Update coordinate grid
Change min and max border of scale
Point's center now coincides with nodes of coordinate grid
Fix invalid line's start point  (fix #16)
Clean ups
Merge pull request #17 from abramovpav/dev

Dev