Summary:
Things still to come:
- General tab
- Signatures tab (potentially remove and land)
Adding emacs things to gitignore
Adding progress. iterating on html/css is incredibly painful
Added layout for accounts page.
Adding layout for appearance page
layout for shortcuts preferences page
adding layount for notifications menu
Adding signatures layout
WIP
WIP - tab switching, accounts tab
WIP ALL THE THINGS
Keymap template support (Gmail / outlook, etc.)
Test Plan: No tests atm
Reviewers: evan
Differential Revision: https://phab.nylas.com/D1890
