Ranks Error on Print-All if rank does not exist

Make category

Make ranks by roles

Delete the role but not the rank

Print-all ---> crash
TypeError: Cannot read property 'name' of null
at Object.exports.PrintRanks [as fFunc] (/app/js/Ranks.js:392:47)
at process._tickCallback (internal/process/next_tick.js:68:7)

We need a deleteRole event that delete's the ID from the DB, also to skip a role if we can't find it from DB to Discord

Start in js/Ranks.js at the PrintRanks entry point and the reported failure near line 392. Reproduce the sequence of creating a category and role-based rank, deleting the role, and running Print-all. Done means Print-all no longer crashes when the role is missing, and the deleteRole event removes the role ID from the database.

Written by the indexing model from the issue text.