SourceType object
Eval source added
Evaluations starting to work

Only iso19115 currently
Grab content of eval source URLs
Added .env to .gitignore
Make hidden eval source html template
Clear out eval inputs when starting a new veal
Import NC files into NCML for eval sources
Edit/delete of eval sources
Add MapSet model, UI
Download mapping
Fix label of which mapset is currently being edited
Remove session dependence
Move nav to index instead of layout, single page app anyway