More work on volfeatures. See details.

Finished base event handler for volfeatures.
Finished zr_voladd, zr_vol_remove, zr_vol_list and zr_vol_dumpstates console commands.
Removed unused function call in class module.
Fixed minior bugs in parameter parser (paramtools.inc).
Made a debug tools module with console commands for directly testing certain functions.

src/zr/playerclasses/filtertools.inc

@@ -384,7 +384,7 @@ stock ClassGetIndex(const String:name[], cachetype = ZR_CLASS_CACHE_MODIFIED)
  */
 stock ClassGetActiveIndex(client)
 {
-    new teamid = GetClientTeam(client);
+    new teamid;
     
     if (!ZRIsClientOnTeam(client))
     {