Alien Arena release notes 7.72.2 + 7.72.3

Release notes 7.72.2 - Improved culling to be auto-adaptive with optional client override, in cvar entity_cull - Fixed freeze bug with particle buffer - Fixed issue with fluctuating mouse sensitivity on high ping - Fixed bug with unintended double-tap registration Release notes 7.72.3 - Fixed remaining issue with disappearing flag - Fixed bug with wrongfully rewarded reward points - Increased reward points to three positions in the hud - Disabled leaning