add vote binds

referenced from cod4 mp config

iw4x/iw4x_00/default_mp_controls.cfg

@@ -61,8 +61,12 @@ bind y	"chatmodeteam"
 //bind z	"+talk"
 //bind x	"openscriptmenu ingame changeweapon"
 
+// MULTIPLAYER VOTE CONTROLS
+bind F1 "vote yes"
+bind F2 "vote no"
+
 // CLIENT ENVIRONMENT COMMANDS
 bind F12	"screenshotJPEG"
 
 // Default controller bindings
-exec default_mp_controller.cfg
+exec default_mp_controller.cfg