Fixes #331: upgrade jQuery to 1.11.1
Merge branch 'develop' of https://github.com/pi-engine/pi into develop
Implemented custom response gzip in case not implemented by web server, per #1119
Completing custom output compression
Added demo for user register invitation, per #1117, #1123
i18n updates
Fix route issue reported by @Marc-pi in #1128
Merge remote-tracking branch 'upstream/develop' into develop