Based on Madhura Jayaratne's branch nav [1],

Merge Recent and Favorites to single line and change looks,
save space.

Just a DEMO commit, not for merge, you can try it via

git pull https://github.com/whalewatching/phpmyadmin nav

or view changes at

https://github.com/WhaleWatching/phpmyadmin/commit/7de5909e909436fa252b8ef086380356139c2735

Too many redundant code and unnecessary  hack skills, and I'd like to remake
other part of PMA  after GSoC, please reconsider my GSoC proposal.

Refs:
[1] https://github.com/madhuracj/phpmyadmin/tree/nav ,
    https://github.com/phpmyadmin/phpmyadmin/pull/1104