FIX: clear appCache entries on run app requests using Services.evictEntries (should fix #66)
FIX: using DOMApplicationRegistry._clearPrivateData to selectively remove appCache entries by app localId
FIX: call nsIApplicationCacheService.discardByAppId directly because DOMApplicationRegistry._clearPrivateData remove app permission as side-effect
REVERT: revert previous changes on dbg-simulator-actors (moving clear app cache into shell.js)
FEATURE: clear appCache and reinstall app from simulator menu item and "shift+accel+R" keyboard shortcut
FIX: remove visible menuitem (clearAppCache+reinstallApp will be accessible using the hidden keyboard shortcut)
fix code style on shell.js
rename refreshAppAndClearAppCacheCmd to refreshClearCacheCmd
Merge pull request #556 from rpl/fix/66

FIX: clear appCache entries on run/update app requests using Services.evictEntries