Merge pull request #475 from minecrafter/performance

Set $wgDisableCounters globally
Disable cirrussearch update
Load Widgets on goldcraftmcwiki
Disable edit on goldcraftmcwiki for non-sysops
Merge pull request #476 from Southparkfan/patch-52

Restrict edit + add Widgets for goldcraftmcwiki
Disable file caching