Possible to create form to edit raid?

[GabeStah]

Perhaps DataTable that lists all Raid participation records in editable form?

[GabeStah]

• [x] Convert existing raid_participation form into datatable.

[GabeStah]

• [x] Improve raid#show view to display edit fields for zone & dates of Raid.

[GabeStah]

• [x] Test that raid deletion properly reverses VCP (possible issue?)