rename: Don't "create new" when input already exists

When you type something into the rename tool which has an exact match in
the suggestions, don't call the "create new item" action but instead just apply
the exact match.

Fixes #82

src/python/klausurarchiv/renaming.py

@@ -614,11 +614,17 @@ class RenameActivity:
           s.clear_query()
           return True
         elif len(s.query)>0:
+          item=None
+          for sugg in s.suggestions:
+            if sugg[0]==s.query:
+              item=sugg
+              break
+          if item is None:
             s.actCreateAlias.createAlias(s.query)
             item=s.actCreateAlias.execute()
             s.aliases.save()
         
-        if item!=None:
+        if item is not None:
           if s.addItem(item):
             s.clear_query()
           return True