Merge pull request #228 from alexmiog/alexmiog_el

Added some strings on messages.po to start working
Don't cache requests to webpay for payment status (bug 896674)
Externalize API routes
add window.screen information to debug page
comment out optimizeLegibility for now (fixes weird rating wrapping in WebKit)
ensure Windows icon does not get clipped for install confirmation (bug 870123)
Fix pluralization bug in pt-BR (bug 896826)
Force the marketplace origin for packaged app installs

When we become a real boy and people start installing us on Android, we'll want to have a stable origin so Persona can work.
Packaged app manifest refresh take two
Resolve payment deferred when the payments API returns 409
hide newsletter form on user switching (bug 896712)
JS-ify build.py (Bug 888538)
Perform record after install when possible (bug 740269)
Update builder empty heuristic (bug 896741)
Better requests logging and deprecation support
add simple open graph tags (bug 755789)
add logos for new operator shelves (bug 892254)
review scroll concept test
Fix builder bug regarding cached pagination (bug 894476)
Move potato parsing to search view (bug 895612)