WATA preview images: full frame vs ROI

[stscijgbot-jwql]

Issue JWQL-245 was created on JIRA by Bryan Hilbert:

Sometimes WATA data are full frame, but the NIRSpec team really cares about the small (32x32 pixel) region of interest. In these cases, using the entire detector to set the scaling for the preview image can result in the region of interest being poorly scaled.

Also, the region of interest is so small that it's impossible to see it in the full frame preview.

Possible solutions:

1. If the team only cares about the region of interest, then for WATA files, make the preview image using only the region of interest and display that.
2. If the team wants to see the region of interest, but also cares about the entire detector, we create 2 preview images and modify the webpage to show both? Emily Wislowski will check with the NIRSpec team to see what they think. The first solution would be easier to implement. The second would take a bit more work.