added support for getting fulltexts via <http://invenio/record/<recid>/files/...> urls.
added support for getting fulltexts via <http://invenio/record/<recid>/files/...> urls.

tiborsimko/invenio-search,inveniosoftware/invenio-records,inveniosoftware/invenio-records,inveniosoftware/invenio-search,tiborsimko/invenio-records,tiborsimko/invenio-records,tiborsimko/invenio-search,inveniosoftware/invenio-search