Add waypoint/rally point feedback sound

Update unit_actions.js
Add author of rally sound to credits
Two rally click options
Use new rally_click sound.

binaries/data/mods/public/gui/credits/texts/audio.json

@@ -148,6 +148,7 @@
 				{ "nick": "lostchocolatelab", "name": "Damian Kastbauer" },
 				{ "nick": "MattSherman", "name": "Matt Sherman" },
 				{ "nick": "mclellandp", "name": "Pat Mclelland" },
+				{ "nick": "p0ss" },
 				{ "nick": "PhoenixDog", "name": "Shawn Anthony Poxleitner" },
 				{ "nick": "Pureon" },
 				{ "nick": "ryan827", "name": "Ryan Davies" },

binaries/data/mods/public/gui/session/unit_actions.js

@@ -12,6 +12,11 @@ var g_TargetMarker = {
  */
 var g_FlareSound = "audio/interface/alarm/alarmally_1.ogg";
 
+/**
+ * Sound we play when setting a waypoint or rally point.
+ */
+var g_RallySound = "audio/interface/ui/rally_click_01.ogg";
+
 /**
  * Which enemy entity types will be attacked on sight when patroling.
  */
@@ -1127,6 +1132,8 @@ var g_UnitActions =
 					"queued": queued
 				});
 
+				Engine.PlayUISound(g_RallySound, false);
+
 				// Display rally point at the new coordinates, to avoid display lag
 				Engine.GuiInterfaceCall("DisplayRallyPoint", {
 					"entities": selection,