Remove default spacing on map render widget.
Last fix for autotiles generation.

Now rendering 100% like RPG Maker.
some minor updates to the interface
Add ZoomIn/Out.
Delete class GameProject (deprecated)
Load Map tree and database.

Known issue: Editor crashes on quit if a project where loaded (even if this was cleared).
Create New Project files.
Display MapTree.
Merge branch 'master' of https://github.com/MarianoGnu/EasyRPG-Editor