Fixed bug where you could corroborate by selecting an evidence item twice;

TTCS_Prot/Assets/Scripts/Classes/EvidenceHandler.cs

@@ -89,6 +89,7 @@ public class EvidenceHandler : MonoBehaviour {
                 //If yes, add the item to the list of potential corroborations.
                 potentialMatches.Add(allCorroborations[i]);
             }
+
             //Test if this corroboration's second item id is equal to the first evidence id input.
             else if (allCorroborations[i].e2_id == e1.id)
             {

TTCS_Prot/Assets/Scripts/Classes/Notebook.cs

@@ -81,7 +81,11 @@ public class Notebook : MonoBehaviour
 
     void addSelected(string id)
     {
-        _selected.Add(_handler.GetEvidenceFromID(id));
+        if(_selected.Count > 0)
+        {
+            if(_selected[0].id != id)
+                _selected.Add(_handler.GetEvidenceFromID(id));
+        }
     }
 
     public void AddClues(Evidence e)