Updated mediawiki/skins
Project: mediawiki/skins/chameleon  5c9d49a24b266fdcad78942c131963026e22dc13

Improvements to nav bars

* Allow subcomponents
* Allow inclusion of Personal Tools into nav bar
* Merge NavHead and NavbarHorizontal
* better handling of HTML class attributes

Change-Id: I53a813953cbc584a5ba349db6596b28dae683ca9