History / Current Frame UI no longer makes sense

[paulftw]

Query history has been moved to the left, below the main editor.

It is no longer clear:

• which frame is shown in the right panel,
• what happens when history item is clicked,
• is editor text related to the view on the right or not.

Proposed fixes:

• add color highlight in the history to indicate selected frame
• add notification when selected frame's code has been changed
• add a button to re-run current frame
• add a button to update the editor with selected frame code
• (hard) add animations when a frame is executed / selected / created

Hopefully this will be enough