Private Regions Tab

[aikar]

If server owner has

timings:
  private-regions: true
  regions-password: XXXXXXX

in their paper config, ensure regions tab does not get sent to the client unless they enter a password

A secondary local supplied password should also allow viewing the regions tab so that Paper trusted dev team can view it to assist without asking the server owner for a password.
If a region password is not supplied, generate one and print it in the upload response.