Fix issue 59 (Team leader can't leave the team if it is the only person in the team) and 75 (Inviting player to your team changes button to "not active" only temporary)
Add size of the team in team management
Enable sending invitation only if the team is not full
Fix issue 59 (Team leader can't leave the team if it is the only person in the team) and 75 (Inviting player to your team changes button to "not active" only temporary) Add size of the team in team management Enable sending invitation only if the team is not full