Intel graphics bugfix

Explicit calls to hide and show menu bar on editing.
That fix the bug on Intel video card in OpenGL mode.
Merge pull request #1029 from Lopuska/patch-3

Intel graphics bugfix
Fix ShaderGen cubemap feature.
Merge pull request #1055 from BeamNG/fix_cubemap

Fix ShaderGen cubemap feature.
Merge branch 'development' of https://github.com/GarageGames/Torque3D into deferred_complete
Merge branch 'deferred_complete' into cubemap_review