Nickname limit update

• Increases TS nick limit per month to 3
• Auto assigns active handle in QM month if it hasn't already
• Auto deactivates handles not within the current month ready for new selection

Limit nicknames to one per month

This release limits nicknames to just one per month.

• Users are able to activate any nicknames in their account panel.
• Users are only able to deactivate a nickname after the month is up.
• If users have not selected a nickname in the account panel, their last created nickname will be used. Only the last created nickname will be able to be used from 06/08/2019 to be selected.