ENYO-2565: automatically download packages built by PhoneGap

Tested on ChromeCanary OSX.  Given that most of the code changes are in the Ares server, I do not anticipate issues on Windows. However, more test is always welcome.

* Merge branch 'master' of github.com:enyojs/ares-project into ENYO-2565
* ENYO-2565: git-ignore new dependency (base64stream)
* ENYO-2565, ENYO-2570: jshint whitespaces & FIXME
* ENYO-2565: download PhoneGap-built packages (+ refactoring)
* ENYO-2565, ENYO-2570: fix jshint whitespaces
* ENYO-2565: do not always request build for every platforms
* ENYO-2565: reshape code (remove useless whitespaces)
* ENYO-2565, ENYO-2570: update .jshintrc (es5 for Node.js) & fix warnings
* ENYO-2565: Carry PhoneGapBuild HTML-written errors messages to the IDE
* ENYO-2565: Carry PhoneGapBuild HTML-written errors messages to the IDE
* ENYO-2565: refactor Ares.ErrorPopup to allow HTML

Enyo-DCO-1.1-Signed-off-by: Francois-Xavier KOWALSKI <francois-xavier.kowalski@hp.com>