menus...
* Shortcuts item moved from Help to Edit
misc...
* fix: q1 mdl reader out of bounds reading crash
* fix: q1 mdl loading of MDL_FRAME_GROUP case
* fix: rightclick main wnd border, release in texbro glwidget == crash (unfreezepointer)
* texbro: search in currently shown textures
* ask for saving nonsaved map on project settings change
* func_detail to nongame group ents counter
* deiconify main wnd, unmaximize maximized view on app closing to save correct layout data
* close preferences dialog on ESC
* Enter = Ok in global and path settings dialogs
* print renderer stats in XY views too
* global 'show renderer stats' option, def = off
* ~10x faster opengl text rendering
