* Upgrade emoji deps and move to node_modules
Add support for Emoji 3.0 and switch from bower to yarn for managing emoji
dependencies.
// FREEBIE
* Delete old emoji deps
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* Don't copy emoji on windows
It is no longer necessary since the symlinked image dir is gone.
// FREEBIE
* Update emoji test
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* Fix emoji tests; remove all overrides of emoji-js functions
FREEBIE
npm run icon-gen and grunt (run default task) can be grouped into one
operation.
Use SIGNAL_ENV instead of NODE_ENV since Setting NODE_ENV adversely
affects yarn's install behavior, so we had to set it after the install
and before the build. By using a custom variable instead, we can set it
globally and eventually use it in a build matrix.
Move mas build to its own npm script
// FREEBIE
These modules together allow us to import css files from third party
components without maintaining symlinks that essentially rename them as
sass partials, which doesn't work on windows.
// FREEBIE
