urban: fix multi-word terms

bot/urban.py

@@ -17,7 +17,7 @@ class Urban(Plugin):
         %%ud <term>...
         """
         # Clean, strip and split term by whitespace
-        term = ' '.join(args.get('<term>')).lower().strip().split()
+        term = ' '.join(args.get('<term>')).lower().strip()
 
         if term[-1].isdigit():
             # Parse number at end as index - 1 and slice term
@@ -30,6 +30,9 @@ class Urban(Plugin):
         # Fetch data for term from urban dictionary as json
         data = requests.get(self.URL, params=dict(term=term)).json()
 
+        if data.get("list") is None:
+            return "API Error"
+
         res_length = len(data['list'])
 
         # No results