Allowing null attributes in ceci definition
Merge branch 'develop' of github.com:mozilla-appmaker/appmaker into develop
Localize Polymer and follow up

This patch make localization for Polymer possible

README PR follow up coming soon
Escaping css query, cleaning up an annon function
Adding alternating gate
Merge branch 'develop' of github.com:mozilla-appmaker/appmaker into develop
Merge branch 'l10nv3' of github.com:alicoding/appmaker into alicoding-l10nv3
Fixing some lint complaints.