Making resultPanel top toolbar work
OK, resultPanel's top toolbar is nice.
Added translation files in app/searchfork/js/lang.
Removed jpsearch_old folder.
Layertree & organize tab work nice.
Still some improvements to be done : 
- hide/remove layer in organize tab : when set not visible, they are
removed as soon as the tree is redrawn. Not great
- Metadata display : for the moment, it's geoserver layer metadata. Need
to add geonetwork MTD read in preference, and then fallback to geoserver