Add Accessibility statement to pages/repository

Accessibility statement text from https://docs.google.com/document/d/1rlolXoqUv840NbuIZ0FiqRUR3NBTqiZtDMDlcxFQYEc/edit
VPAT hyperlink is currently a dead-end.
Change 'Accessibility Statement' to 'Accessibility'
1927 : require journal name on initial submission page
1920 : Better Manage CC Errors in Checkout Step
1920 : Better Manage CC Errors in Checkout Step
cherry pick from atmire-1763
Merge branch 'atmire-1927-2' of https://atmire.com/git/dspace-dryad into atmire-1920
atmire-1691
Merge branch 'dryad-master' into atmire-1920
fix small bugs in shoppingcart management
Add notes and payment date to shopping cart
Fix bugs in notes
Initial framework for Odin's Hamr
Add support for pulling all author names out of DSpace
Odins Hamr stage 2

Added proper support for ORCID lookup, started introduction of HAMR matching.
First working draft of matching algorithm
Merge branch 'dryad-master' into dryad-staging
atmire-1987 : response-logging : exclude DSpace 1.8 dependencies from inclusion into dryad build
Merge branch 'fix_reviewer_emails' into dryad-staging
Merge branch 'atmire-1987' into dryad-staging