- Add dual protocol support to team arena demo selector

- Fix demo selection in team arena menu on case sensitive file systems
- Some changes in the way how vanilla q3 demo file lists are compiled in the menu

code/ui/ui_local.h

@@ -631,7 +631,7 @@ typedef struct {
 #define MAPS_PER_TIER 3
 #define MAX_TIERS 16
 #define MAX_MODS 64
-#define MAX_DEMOS 256
+#define MAX_DEMOS 512
 #define MAX_MOVIES 256
 #define MAX_PLAYERMODELS 256