* 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.
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* Update emoji test
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* Fix emoji tests; remove all overrides of emoji-js functions
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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.
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Use emojijs for replacing unicode with image tags for display. We were
already using it to replace colons with unicode. Additionally it has
a companion data repo that is kept up to date with images from all
the common image sets.
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Move away from inline style attributes for setting contact colors.
Apply colors by name via css classes instead. Also lays groundwork
for syncing contact colors.
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Simplifies the grunt watch task for sass. Renames sass partials with
leading underscores. Flattens stylesheet directory. The only remaining
raw css file is options.css.
Move globally-relevant styles to _global. Shrink overall font size.
