rename mutation_summary.js to mutation-summary.js and load it from shell.xul
minor tweaks on remote-geolocation-client.js
tweaks on SimulatorScreen.js (debug logging, error reporting and event dispatching)
coding style tweaks
removed code unrelated to the current pullrequest (will be moved in a separated pullrequest)
fix debug helper in SimulatorScreen.js
dbg-simulator-actors.js: Cu.reportError on uninstall exception
GlobalSimulatorScreen.jsm: disable logging by default
lockscreen.js: remove homescreen ready detection and fix indentation
window_manager.js: simplify buggy orientation workaround and cleanup logging
remove trailing whitespaces