Fixed Back button on right-size recommendation page

https://bugzilla.redhat.com/show_bug.cgi\?id\=1121802
Review response: Edited elsif branch, fixed 'no route error'

https://bugzilla.redhat.com/show_bug.cgi\?id\=1121802
Review response - Edited button, Fixed no-hover tag
Merge pull request #775 from romanblanco/fix_cancel_button

Fixed "Back" button on right-size recommendation page