ENYO-2458: restore config.xml generation, expose project.json & config.xml

Tested on OSX/ChromeCanary

* ENYO-2458: non-build services/providers may also need per-project UI
* Merge branch 'master' of github.com:enyojs/ares-project into ENYO-2458 
* ENYO-2458: make project.json visible in HermesFileTree (FIXME)
* ENYO-2458: re-enable phonegap config.xml generation
* ENYO-2458: update default phonegap version to 2.5.0
* ENYO-2458: resist a socket timeout (no statusCode)
* ENYO-2458: do not crash on request() timeout

Enyo-DCO-1.1-Signed-off-by: Francois-Xavier KOWALSKI <francois-xavier.kowalski@hp.com>