Small refactor to import panel

[briehl]

• Cleaned up some things that made my linter angry - mainly whitespace and quotes.
• Changed staging area viewer to use newer API calls for handling things (fetching files, inserting app cells).
• Tweaked the file staging client to be a little more flexible with its list function.

[coveralls]

Coverage increased (+0.0002%) to 12.217% when pulling f836b6b on briehl:import-refactor into 464f78c on kbase:develop.

[briehl]

@thomasoniii - let's get this merged before your changes start to conflict too much.

[thomasoniii]

I'm leery of the catch that just returns an empty array w/o noting it at all on 74-77 of fileStaging. Should it at least have a console.error as well? Or is it truly a non-issue and it just gets reported as a failure when nothing's there? I'm not leery enough to hold it up, just to note it.

I have no idea why javascript linters are so insistent about single quotes. Perl? Sure, differentiate. But JavaScript just seems utterly arbitrary.

[briehl]

I see now. I put that no-op error there just as a convenience. I had it tooled together that if a list call fails, it should show an empty list. But you're right, if an error occurs there should at least be a warning.

Actually, it should be up to whatever invokes the client to catch the error and deal with it there. So, really, the client should just pass that through. I'll make the adjustment.

[coveralls]

Coverage increased (+0.0004%) to 12.218% when pulling eb44455 on briehl:import-refactor into 464f78c on kbase:develop.

[coveralls]

Coverage increased (+0.0004%) to 12.218% when pulling 65b8bd9 on briehl:import-refactor into 464f78c on kbase:develop.