Theia is not compatible with mmenu

[kejingz]

theia disables mmenu by adding 'transfrom: none' to divs

[kejingz]

Providing an option to add an exception to applying the transform would be helpful:

o.sidebar.parents().css('-webkit-transform', 'none'); //change to
o.sidebar.parents(':not(.theia-exception)').css('-webkit-transform', 'none');

[rawzone]

Also breaks our custom "slide out menu setup" when applying the transform: none to parent elements.