Few bug fixes

Fixed `Time Left!` display. Added obstacle course ends for all 4 maps. Sets obstacle course end goals to only work on the correct gamemode. Set correct time limits for keep away in every map.

Assets/Scripts/Game/ObstacleEnd.cs

@@ -0,0 +1,27 @@
+using Game;
+using UnityEngine;
+
+public class ObstacleEnd : MonoBehaviour
+{
+    void Start()
+    {
+        UpdateVisibility();
+    }
+
+    void Update()
+    {
+        UpdateVisibility();
+    }
+
+    private void UpdateVisibility() // Sets object active if playing obstacle course
+    {
+        if (GameManager.gameMode == GameManager.GameMode.obstacleCourse)
+        {
+            gameObject.SetActive(true);
+        }
+        else
+        {
+            gameObject.SetActive(false);
+        }
+    }
+}

Assets/Scripts/Game/ObstacleEnd.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 69fc903d39ac3d24aab4ce7a68dba447