fix display of hours

app/helpers/time_entries_helper.rb

@@ -0,0 +1,10 @@
+module TimeEntriesHelper
+	def formatted_duration(entry)
+		hours = entry.hours.to_i
+		minutes = entry.minutes.to_i
+		
+		return nil if hours == 0 && minutes == 0
+		
+		format("%d:%02d", hours, minutes)
+	end
+end