Removing rounded-corner hover changes from Log In and Sign Up links
Removing collections list from data-package page
Merge branch 'dryad-staging' into jima-sitewide-cleanup
Increasing blog feed (on home page) to 5 items
Hiding underline on search results, except for DOI (if any) and on hover.
Cleanup of Login/Register page
Misc cleanup of submission page, image-links.

Cleanup of initial data-submission page. Fix for links around a single
image, to avoid visible underlines before and after.
Merge pull request #147 from datadryad/jima-sitewide-cleanup

Misc cleanup, esp. in data-package page