Skin system: improved test to avoid loading a CSS more than once. MSIE default skin layout still broken, needs fix.
Skin system: improved test to avoid loading a CSS more than once.
MSIE default skin layout still broken, needs fix.

mrlundis/wymeditor-legacy,mrlundis/wymeditor-legacy,mrlundis/wymeditor-legacy,mrlundis/wymeditor-legacy