Cleaning up css in girder-browser example.
Implemented "create" action.
Implemented "edit" action, but doesn't seem to be working on the Lyra side.
Added a few more control parameters to use Lyra in "editor mode"
Just dealing with the vis data itself, not saving/loading files in Lyra
Added contrived way to vary data inside visualization.
Proper URI encoding to avoid plus signs in strings
Adding a basic data editing action
Adding basic data editor
Dynamically loading datasets from girder.
Removing unneeded elements from app
Can switch between two "unsaved" visualizations.
Cleaned up vis loading from girder (plays well with switching to "unsaved" visualizations)
Added HTML elements for saving files.
Involved modal dialog more in saving files.

Successful save closes modal.

Bad filename shows error; leaves modal open.
Saving to girder works.
Merge branch 'save-to-girder' into lyra
Loading from girder works now
Saving action now updates file list as well.
Opens Lyra in message-passing editor mode