[xwiki-devs] Release of Admin Tools 4.0

* SQLTools developed by Guillaume Delhumeau has been implemented to standardize SQL queries inside Admin Tools. With it, we now can Run Query, Show Large History, Show Spammed Pages... We plan to include PostgreSQL scripts very soon. * Used Space page has been rewritten completely. It summarizes now disk space used by all subwikis of the farm, and show attachments related database if filesystem storage mode is not used. * Configuration Check page has been rewritten, with some recommendations at the bottom depending on the configuration. At the moment, we put recommendations about memory, cache, encoding and cookies encryption keys. * User Rights Check has been replaced by Show Rights, which simply shows every right set on wiki / spaces / pages. It may be useful when we put temporary rights to pages (which can lead to security leaks) * Show Logs script have been included with a UI which permits to choose number of loglines to output, directly in the wiki page. * Database Encoding Check nows works with subwikis. Indexes Check has still to be implemented with full list of Indexes. * Export Tools now have Large Export/Import scripts * DatabaseToFilesystem porter script has been added (it seems not compatible with 5.x at the moment though). * Requests Status page has been dropped