ENYO-1908: reduce the file nodes list refreshing
ENYO-2605: JSHint rules observance
Merge branch 'master' of github.com:enyojs/ares-project into ENYO-1908
Merge pull request #383 from enyojs/ENYO-1908

ENYO-1908: Reduce filetree refreshments after any file operation

Tested on:
* Linux Chromium 26
* Mac safari 6, Opera 15