Bug 16874: Making serials collections actions buttons

Bug 16874: Making serials collections actions buttons

To test:
1) Go to serials -> Search a subscription (or make a new one)
2) Ensure that subscription has an end-date that has passed or will pass soon
3) Go to Serials collection (left sidebar menu)
4) Ensure that Subscription summary table has two buttons, Create routing list and Renew. These buttons should be bolded and the table cell highlighted
5) Ensure 'Print list' is a button in year tables below
6) Edit subscription to have a later end-date (will not expire soon)
7) Go back to serials collection
8) Ensure that table cell is no longer highlighted and buttons not bolded. Renew button should not be there.
9) Ensure that both buttons do not wrap when the browser is narrow

Sponsored-by: Catalyst IT
Signed-off-by: Lisette Scheer <lisetteslatah@gmail.com>
Signed-off-by: Katrin Fischer  <katrin.fischer@bsz-bw.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>