fix #1232 simple spinner while installing app
.
.
Merge pull request #1334 from Pomax/canary

moved L10n to a ready() requirement, rather than a blocker for the polymer definition
removing some dead code
Upating bundles for production push
removed webkit prefix and added another second for spin
Fixes bug where channel lines were not showing up for components after reloading a saved app.
Merge pull request #1299 from ScottDowne/t1232

fix #1232 simple spinner while installing app
Merge pull request #1350 from flukeout/channelbugfix

Fixes bug where channel lines were not showing up for components after r...
Merge branch 'develop' of github.com:mozilla-appmaker/appmaker into develop
fix #1313
Added a default thumbnail when 'thumbnail.png' doesn't load from within a component.
Removed unused function!
Merge pull request #1359 from flukeout/defaultthumbnail

Added a default thumbnail when 'thumbnail.png' doesn't load from within ...
Merge pull request #1357 from ScottDowne/t1313

fix #1313
disabling navigation from backspace. Fixes #1182.
Checks to see if a component has listeners or broadcasts before adding the channel menu and vis lines element.
Small margin fix for tray items.
Fixed missing (X) on unused channels in the channel menu and removed unused function.