some warnings

rowers/views/analysisviews.py

@@ -1101,7 +1101,7 @@ def performancemanager_view(request,userid=0,mode='rower',
         showtests = True,
         )
 
-    ids = pd.Series(ids).dropna().values
+    ids = pd.Series(ids,dtype='int').dropna().values
 
     bestworkouts = Workout.objects.filter(id__in=ids).order_by('-date')
 
@@ -1411,7 +1411,7 @@ def rankings_view2(request,userid=0,
         p1 = res[4]
         message = res[5]
         try:
-            testcalc = pd.Series(res[6])*3
+            testcalc = pd.Series(res[6],dtype='float')*3
         except TypeError: # pragma: no cover
             age = 0