OO-1068: fix the behavior of the extended search in question pool
no-jira: add the possibility to refresh the internal lucene objects which holds the index
no-jira: send the refresh command after the index files are copied in the index path
OO-983, OO-984: better remove workflow for the preview images of repository entries and catalog entries
OO-1183: realyy synchronized the dtabs, not only  half of the access to it
OO-983, OO-984: update the scale of the preview image in repository list with the one defined in CSS for the o_visual element