WS-1574 SECI auto delete settings button

Made a button for the SECI auto delete setting...that is all.

assigned to @dnemergu

Where's the backing database column addition?

Way over yonder in https://gitlab.nrao.edu/ssa/vlass/-/merge_requests/119. I meant to open this MR when I opened that one.

approved this merge request

mentioned in commit d9ec9d7d

merged