Pull subject data in
Add subjects page.
Add related courses.
Fix tab link
Tweak comments.
Remove programmme spec url
Withdraw / suspended shows holding message
Merge pull request #45 from unikent/feature/use-subject-data

Feature/use subject data
Merge branch 'develop' of https://github.com/unikent/of-course into feature/module-list
Fixed structure page to show the latest version of the module data