CLEANUP: started some database cleanup and added some more comments

CLEANUP: started some database cleanup and added some more comments

instead of having a different function for each possible way to query
for example the full name of a player, there is now only one function
with a switch statement that handles the different cases. Still not
100% perfect, but I think nicer to read than before.

Signed-off-by: Arun Persaud <arun@nubati.net>