After a discussion with the rest of the team, we decided that there are
plenty of flaws with having application roles stored in the
configuration file, primarily due to the fact that if somebody were to
want to change the roles displayed on the dropdown menu, they would have
to perform the tedious work of updating the configuration and then
restarting the server, but we can do better.

With this commit, all the application roles are inferred straight from
the arguments that are passed from the member executing the command. A
restart will not be needed in case somebody wants to change the
available roles or add a new one.

This way we are able to add more roles in the future without running
into any character limits. Getting the last character of the menu option
ID is not the most effective way to go about this.

Adding the delimiter in the menu option IDs allows us to treat the ID of
the role better and in a safer way.