Better authentication experience

[joshhunt]

Inspired by lowlidev's auth implementation, I want to improve how auth works on Destiny Sets:

0. Refactor auth out of local state and into a HOC / redux state
1. Remove the "in the flow of the document" auth prompt and instead have something sticky to the bottom of the screen, that maybe takes up like a third of the screen (dismissable?).
2. Never clear the locally stored profile data/inventory, unless the user explicitly logs out. If authentication has expired, instead show a 'reauth for latest inventory' message, but still keep around previous data.
3. Store google drive dismantled items in local storage and show that before we load it as well

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1. Move cloud storage updating into wrapping App.js HOC