Major refactoring of site and user CSS, creating ResourceLoaderUserModule and ResourceLoaderUserPreferenceModule. Also moved as much of the global variables being generated in Skin::makeGlobalVaiablesScript into the ResourceLoaderStartupModule - which will make configuration changes effective site-wide in 5 minutes instead of whenever all pages are purged from cache - what remains embedded in the HTML is article and user specific - two things we don't know by the time we request the startup module. Also, fixed issue where debug=false was being interpreted to be equivilant to debug=true. Finally, finished integrating the introduction of $wgLoadScript, thus fixing overlooked issues in r72763.