BUG: Overlapping Player Name under XHair

[proof88]

When players are overlapping, the later added player is rendered over the earlier added player, since this is controlled the PURE.
That would imply that in such situation the later added player's name is preferred to be shown, but it is not the case due to the order in m_mapPlayers.
To solve this, there should be also a different map where players are ordered by their connection time, and we should iterate that.
This should be solved in PlayerHandling::updatePlayersVisuals().

We cannot control PURE's rendering order from outside.

Prerequisite: part of this ticket: #292