fixes issue #745
A quick fix for race condition on component-tray.html

Doing it this way we will assure we don't use the "this" when
sometime the DOM is not ready... I'm not so sure if that is really
about that, but this will definitely fix that problem at least **for
now**
Merge pull request #776 from alicoding/l10nFix

A quick fix for race condition on component-tray.html
Removing log stmt
Merge branch 'develop' of github.com:mozilla-appmaker/appmaker into develop
Merge pull request #763 from mozilla-appmaker/745

fixes issue #745
only log 400+ error codes
Merge pull request #787 from mozilla-appmaker/onlylog400+

only log 400+ error codes
Removed the single item view component, not longer used.
Merge branch 'develop' of https://github.com/mozilla-appmaker/appmaker into develop