Change to tab key action

[PuffinPanic]

Hi

The action of the 'tab' key in configuration window recently appears to have changed from indenting to a navigation function. 

The user should be able to select which action the tab key performs. 

Alternatively, tab should indent and shift-tab (or alternative) navigate. I'm not the only one who would appreciate the choice.

PuffinPanic

[patrick_digan]

Yes Please! I'd love for tab to indent when in an expression editor.