storyPointadd warning on ticket page without story point

@johnhof 

add warning message on ticket page if no story point added. (I always forgot to add before working on it)

Test
- go to https://brander.atlassian.net/browse/DETTAB-37 will see warning
- go to https://brander.atlassian.net/browse/DOCKTAB-344 will not see warning

![screen shot 2014-10-08 at 9 54 45 pm](https://cloud.githubusercontent.com/assets/902357/4570157/540c8870-4f58-11e4-958e-b59128926173.png)