ENYO-3561: add error page for PGB applications

See JIRA https://enyojs.atlassian.net/browse/ENYO-3561 

Ready for review.
Tested on Chrome+Firefox / Windows 7 64b
PGB 3.1 + android 4.4 device

Enyo-DCO-1.1-Signed-off-by: Francois Connetable <francois.connetable@hp.com>