The severity of a problem was not being displayed on the review page, if

the severity was added using the add comment button on the review dialog

page.
The drop downs menus for severity options on the edit review page

were not saving the model with the selected option. The model not saving

the selected option caused the data not be saved in the database when,

submitting the form.
The patch fixes the problem by saving the model anytime the severity

changes in the drop down. When the severity is saved it is properly added

to the database, and this fixes the problem on the review page.

I added a comment of each severity using the add comment button on the

reviewable page. On the review dialog page I added another comment with a

severity and published it from this page. I repeated the process adding

multiple comments with varying degrees of severity, and different

amounts of comments.
I ran the js tests with the extension enabled and all expected tests

passed. I had 2 failures, they seemed unrelated and other people were

experiencing them, and they are being filed separately.
All tickets had proper severity in the database and displayed it on the

reviewable page.