Made the document icon clickable
Follow-up on review
Finish the avocetfooter widget
Create the avocetheader test
Follow-up on review
Fix selector in the avocetheader test
Follow-up on review, fixed typo
Follow-up on review

No more usage of `display: table` and `flexbox` for cross-browser issues. Replaced with `float`.
Merge pull request #357 from Coenego/issue-355-doc-not-clickable

Made the document icon clickable
Merge pull request #374 from bp323/avocetTests

Finish the avocetfooter and avocetheader widget tests
'What is changing' wording changes
Add link to the university's policy on the 'What is open access' page
Switch order of sections on the 'What do I need to do' page
Add comma in copy change