Update Search Tab mockups

• permanent bulk actions (on document selected only) -> search_view_content_view_selection.jpg
• add Advanced search and Smart search actions -> search_view_other_search_links1.jpg & search_view_other_search_links2.jpg
• Review Filters with a select. -> all screenshots
• Review csv export of the content view position -> all screenshots.

About the pagination, we can make a try by displaying it below the "toolbar" if it's a better solution for the FT / LTS.