Bugfix:  Brand new players will have a client.player_age of 0

Before:  When a client is created it's player_age variable is set to "Requires Database", then a select query is ran against the database to see if they have been seen before if they have logged in before this will have a row for them and it will set player age.  However if there is no row for them it doesn't change player_age from default.

After:   Before we check for an entry in the database we set their player_age to zero, we already checked we have a database connection so we know we will be able to pull this information and if we can't then it means they are a new player.  Set their player_age to zero and be done with it.

What this does:  Brand new players will no longer be able to bypass the jobs minimal age limit.
Merge pull request #4937 from Ccomp5950/player_age_fix

Bugfix:  Brand new players will have a client.player_age of 0