Add JS/C2JS/Labs menu to TodoMVC
Rearrange entries into JS/C2JS/Labs + RT + Vanilla
Vendor Polymer components
Add vulcanize to build suite
Replace CSS columns with flexbox

Columns are a bloody nightmare with a horribly broken implementation in Chrome.
This allows us to get rid of a bunch of fixed media queries (yay!) and instead
dynamically reflows into columns if the space allows.
Animate height change for applists
Merge pull request #984 from tastejs/tastelang-hackery

TasteLang changes!