Booting Bootstrap

* IG-36 #resolve #close Removed Bootstrap without damaging mobile.
* Restructured Angular.js routes to nest somewhat more sensibly---e.g.,
  into "ignota"/"ignota.auth"/"ignota.auth.login" &c.
* IG-38 #comment Got about halfway through porting token JS.
* Fumigated old authentication code to prepare for invitations.
Fix flexbox bug.
Merge branch 'feature/invitation-setup' into develop

* feature/invitation-setup:
  Fix flexbox bug.
  Booting Bootstrap