Fixes the following

    Traceback (most recent call last):
    File "<maya console>", line 1, in <module>
    RuntimeError: Plug-in, "RenderMan_for_Maya.so", was not found on MAYA_PLUG_IN_PATH.
    mrv.util> ERROR | Argument to query flag must be a boolean
    Traceback (most recent call last):
    File ".../lib/python/mrv/latest/mrv/util.py", line 415, in send
    func(*args, **kwargs)
    File ".../engines/maya/0.4.x/python/tx_maya/components.py", line 82, in _before_save_check
    filepath = mrv.maya.Scene.name()
    File ".../lib/python/mrv/latest/mrv/maya/scene.py", line 242, in name
    return make_path( cmds.file( q=1, exn=1 ) )
    TypeError: Argument to query flag must be a boolean
Query flag is boolean as well, just for testing
Undo latest change - it's not the cause of the issue
Using https for submodules, otherwise checkouts don't work