binds...
* ctrl + shift + v: MoveToCamera (translate selection to camera origin)
* m2 in entities creation menu: change classname
misc...
* do not delete selected on entities creation, just deselect
* ExpandSelectionToEntities: do not select invisible nodes
* fix: keep stuff on grid after paste/move to camera commands, if stuff's size is (2*N + 1)*gridSize
* MapName build system variable (can use to make build menu entry to run map in a game)
* build->customize: list available build variables
* texture browser: gtk search in directories and tags trees
* fix: build menu->customize Cancel button cancels (was reloading menu from disk)
* build menu->customize Reset button (= reload menu from disk = editor start state)
