atlas info on main gui page

[nsteinme]

Reminder of something we discussed today: might be a good idea to have the atlas identified on the main UI near the coordinates box, e.g. could be a little box that says "Current atlas space: Qiu2018 [what's this?]" and if you click the 'what's this?' button it takes you to the a page within the help menu that says what the different atlases are and a brief description of how each was generated?