Add Renew Button to Loan Details

Purpose: To add a renew button to Loan details per the agreed upon mockups with RA SIG

Scenarios:

1. Scenario
   • Given the Loan details page
   • When displayed
   • Then a Renew button should display as shown in this mockup: https://drive.google.com/file/d/0By8ccf5VV4EWT1E5UjVfQ2EwdDA/view?usp=sharing
2. Scenario
   • Given the Renew button on Loan Details
   • When clicked
   • Then behavior for renewal should mimic the behavior seen when clicking on "Renew" from the actions menu on the Loans page. See specifically:
     • UIU-405
     • UIU-415
       From ICs: we think that the new button is working as expected