[DF-1550] - smooth/pixelize + align to pixel feature.
[DF-1550] - smooth/pixelize + align to pixel feature. Win32 changes.
[DF-1553] - Coarse/Fine controls movement depending on whether Shift key is pressed.
[DF-1553] - Coarse/Fine controls movement depending on whether Shift key is pressed - MacOS fix.
[DF-1552] - Pixel Grid is implemented for big zoom levels in UIEditor.
[DF-1554] - Horizontal/Vertical Rulers for UIEditor.
[DF-1554] - Horizontal/Vertical Rulers for UIEditor - Win32 fixes.