prevent users to use 0 as planned session value

rowers/plannedsessions.py

@@ -327,7 +327,10 @@ def is_session_complete_ws(ws,ps):
         if not completiondate and score>=cratiomin*value:
             completiondate = w.date
 
-    ratio = score/float(value)
+    try:
+        ratio = score/float(value)
+    except ZeroDivisionError:
+        ratio = 0
 
     verdict = 'better than nothing'
 
@@ -581,7 +584,7 @@ def get_sessions(r,startdate=date.today(),
         startdate__lte=enddate,
         enddate__gte=startdate,
     ).order_by("preferreddate","startdate","enddate").exclude(
-                sessiontype='race')
+                sessiontype='race').exclude(sessiontype='indoorrace')
 
     return sps