* I left MwEmbed alone since it was scary.
* I left the half-completed commented-out ResourceLoader code in Maps as it was
* PrefSwitch was apparently broken, with a typo in remoteBasePath.
* ClickTracking and ProofreadPage now demostrate two different styles of multi-module registration. Choose which one you prefer.
* SemanticMediaWiki/SMW.hooks.php became empty and was deleted.
* Tested using a special script that includes extension setup files and checks $wgResourceModules for correctness.