fix #2014 (User menu dropdown in caliblur is tiny and presents scrollbars)

Fix display of nonexistent series_index
Fix caliblur add-to-shelf

cps/jinjia.py

@@ -113,6 +113,7 @@ def yesno(value, yes, no):
 
 @jinjia.app_template_filter('formatfloat')
 def formatfloat(value, decimals=1):
+    value = 0 if not value else value
     return ('{0:.' + str(decimals) + 'g}').format(value)