Merge pull request #36 from pamfilos/pu

overlay: updates for issue #33
Merge pull request #38 from pamfilos/pu

* records: files preview style + js interaction
* pagination: FIX search pagination
* overlay: added "search" to header-nav + conf lang
* logo: updated logo + changed font
Merge pull request #39 from pamfilos/pu

* base: set "middle" as homepage + mod header nav
* entrypoint-pages: introduced collections list
overlay: header + footer responsiveness
search: made responsive + buttons fix