[Done] New shortcuts for mesh and material menus

1. Set Material - w
2. SimpleMaterial - Shift+w
3. ModMaterial - w
4. SplitAlongPlane - Shift+c
2. SimpleMaterial - Shift+w
3. ModMaterial - w
4. SplitAlongPlane - Shift+c
http://erbsen.untergrund.net/board3/
http://erbsen.untergrund.net/board3/viewtopic.php?f=55&t=1322