* Fix Terrain Editor brush #2471
Now is possible to leave from painting mode on Terrain Editor . You can simply press the button to reset window next to close button on title bar, or close/hide Terrain Editor window.
* Fix hide brush visualizer on OSX
+ Added settings for the currently selected tool. This includes brush size, brush opacity, and brush height
+ Improved the speed of the smoothing algorithm by removing the new Array that was being created
+ Ignore transparent pixels in the smoothing algorithm
+ The "Create Terrain" action now creates a new image, saves it to Textures folder and adds it to the scene
+ Hid the "Paint" tools, as they have yet to be implemented
