[MIGRATION] #130 Priorities migration

apps/maarch_entreprise/actions/index_mlb.php

apps/maarch_entreprise/actions/validate_mail.php

apps/maarch_entreprise/admin/priorities/admin_priorities.php

apps/maarch_entreprise/admin/priorities/class_priorities.php

...entreprise/admin/priorities/class_priorities_Abstract.php

apps/maarch_entreprise/admin/priorities/priorityManager.php

apps/maarch_entreprise/definition_mail_categories.php

apps/maarch_entreprise/documents_list_copies.php

apps/maarch_entreprise/documents_list_with_attachments.php

apps/maarch_entreprise/indexing_searching/change_doctype.php

...rise/indexing_searching/documents_list_mlb_search_adv.php

apps/maarch_entreprise/indexing_searching/search_adv.php

...aarch_entreprise/indexing_searching/search_adv_result.php

...rch_entreprise/indexing_searching/update_process_date.php

apps/maarch_entreprise/reports/report_by_period.php

apps/maarch_entreprise/xml/IVS/validation_rules.xml

apps/maarch_entreprise/xml/entreprise.xml

core/class/ExportControler.php

migration/18.04/migratePriorities.php

modules/avis/documents_list_with_avis.php