[CRITICAL] GvG Map - Special characters (e.g. <>) in guilds' name

[Arklur]

It seems if the name of a guild includes the <> characters, the name is not shown, likely because the special characters are not escaped, become the part of the HTML itself:

Windows 10 64 Bit Chrome 106.0.5249.119 (64 bit) us1 (Arvahall) 2.11.0.0 - English

[Th3C0D3R]

This is really critical as it could enable XSS!

[outoftheline]

we need a general function to escape these chars then, because it also happens in the costcalculator (and possibly everywhere where there is a guild name, so guild expedition(?) and guild battlegrounds)

[teageek]

Whatever you did within the last update: It made it worse: