Update for issue pages
[#142] Proper fix

- Use release information to build epub/pdf links dynamically on download
  landing page.
Merge branch 'hotfix/142'

Close #150
Fixes #142
Re-added "button" class to doc download links
Merge branch 'hotfix/doc-buttons'
Merge pull request #149 from froschdesign/hotfix/issues

Update for issue pages
Merge branch 'hotfix/149'

Close #149