make a string translatable
Add translation to users activate

via daniel.lind
https://groups.google.com/forum/#!topic/omeka-dev/VOYnyBKTP3Y

thanks!
make public and admin users/activate.php translation strings consistent
Fixed addition of a tag with a different case.
Merge pull request #650 from Daniel-KM/fix_case_tag

Fixed addition of a tag with a different case.
Added a call to parent search filters.
Optimized specific search filters.
Use internal assets by default.
Use Google fonts only if wanted.
Use original jQuery CDN instead of Google one.
Allows multiple derivative types.
Replaced unusual "case" condition by a "if".
Added a filter for full text indexation of elements.
Renamed "search_element_texts" the filter used for full text indexation.
Set default derivatives types automatically.
Allowed image tag for any record.
Fixed notice in record metadata.