Reorganizing the images folders for every plugins

core/DataTable.php

plugins/API/API.php

plugins/Annotations/templates/annotation.twig

plugins/Annotations/templates/annotationManager.twig

plugins/Annotations/templates/evolutionAnnotations.twig

plugins/CoreAdminHome/templates/generalSettings.twig

plugins/CoreHome/images/bg_header.jpg

plugins/CoreHome/images/bullet1.gif

plugins/CoreHome/images/bullet2.gif

plugins/CoreHome/images/more.png

plugins/CoreHome/images/more_date.gif

plugins/CoreHome/images/more_period.gif

plugins/CoreHome/images/promo_splash.png

plugins/CoreHome/images/reset_search.png

plugins/CoreHome/images/search.png

plugins/CoreHome/templates/datatable.css

plugins/CoreHome/templates/datatable.js

plugins/CoreHome/templates/datatable_cell.twig

plugins/CoreHome/templates/datatable_footer.twig

plugins/CoreHome/templates/donate.js