Show tower levels

[oezgueremir]

Revamp level indicator

• text colorized per tower level [1=green, 2=blue, 3=red]
• indicate enhance ability [*]
• indicate upgradeability [^]
• indicate strategy ([C]losest, [W]eakest, [S]trongest, [F]irst, [L]ast)
• indicate lock target setting [+]
• "Always show tower levels" option

[mjaun]

Closed due to inactivity.