* titles, authors, dewey, ... indexation : exact all exact labels are
kept and indexed before phonetic. Articles are no longer dismissed
* authors indexation : in order to find "miles davis" AND "davis
miles", authors are indexed like this: "name firstname name"
* simple search: exact expression has more relevance and passes the
"dancing queen" test
* search by expression: users can now search an exact expression using
double quotes. In this case, if no result found, search is not extended
* Remove unused cosmogramme screen : Dewey & PCDM4
* fix bug when search widget keep last search : always unset pertinence to not extend search
* can differenciate main titles and authors from other titles and authors
* add script for record indexation without total import