GUD v2 (graph-paper revamp)

closes #65, closes #66, closes #67, closes #68, closes #69, closes #70, closes #71, closes #72, closes #73, closes #74, closes #80

This PR is non-functional on other machines since I am using npm link to pull in a few unpublished graph paper changes that enable functionality.

[x] publish & use graph-paper 0.0.0-alpha.14
[x] add the graph paper code quality setup (eslint + prettier)
[x] port over metric chart story from graph-paper
[x] add back in loading / error states
[x] integrate new date selector
[x] re-integrate data integrity annotations
[x] re-integrate querystring
[x] add keyboard shortcuts as modal (#74)
[x] add smoothing option (default is 7-day)
[x] restyle sidebar to support multiple views
[x] integrate a better single-graph view
[x] move from mode=whatever to proper hash-based routes
[x] preparation for supporting comparison view (which won't be tackled in this PR)

mozilla / gud