ide: removed background image

Conflicts:
	ide/locale/ide.pot
ide; made ToolBox and Properties Sheet invisible by default.
ide; incomplete plugin system. added gitto on save plugin directly in the ide.
Revert "ATTEMPT -- ide; fixed closing current project before even showing new project dialog."

This reverts commit f7ab738beb2b7de0a730d85394f55a1169b725cc.