CLC-2991 Fixed: Expired students should be able to see the MyFinances information

https://jira.media.berkeley.edu/jira/browse/CLC-2991

- Added a new role "ex_student" in the return value for CampusData.get_person_attributes
- Added a "has_financials_tab" attribute to the :student_info hash returned by the UserApi feed
- Added tests to confirm that both active and expired students have their :has_financials_tab returned as true and that non-students get it as false
- Changed view (_navigation.html.erb) to use the has_financials_tab attribute (instead of roles.student) to toggle the "My Finances" tab
Merge pull request #1997 from chikoon/CLC-2991-expired-students-mf

CLC-2991 Expired students should be able to see the MyFinances information
Merge pull request #1994 from christianv/CLC-3076

CLC-3076 - Feedback link in the footer should be https not http
CLC-2976 - Implement - CFV - Link to 1098-T Info
https://jira.media.berkeley.edu/jira/browse/CLC-2976