Fixes #4196: Archive Rule categories
Fixes #4295: reduce maximums days of reports retained
Merge pull request #403 from VinceMacBuche/4152/change_default

Fixes #4152: reduce maximums days of reports retained
Fixes #4299 : XmlMigration from format 4 to 5
Fixes #4301 : Display Rule category changes in Event log
Fixes #4289: save directives based on a modified technique on library reload
Merge pull request #400 from VinceMacBuche/ust/4196/archive_rule_category

Fixes #4196: Archive Rule categories
Merge pull request #404 from VinceMacBuche/4299/xml_migration_from4_5

Fixes #4299 : XmlMigration from format 4 to 5
Merge pull request #406 from VinceMacBuche/4301/display_category_event

Fixes #4301 : Display Rule category changes in Event log
Merge pull request #405 from fanf/bug_4289/expecting_reports_not_updated_when_metatechnique_changes

Fixes #4289: save directives based on a modified technique on library reload
Fixes #4304: Add 2.9 logo: Liberty ship
Merge pull request #407 from VinceMacBuche/4304/logo2.9

Fixes #4304: Add 2.9 logo: Liberty ship
Change version of pom.xml to 2.9.1-SNAPSHOT
Fixes #4309: Add correct xml previous migration
Merge pull request #408 from VinceMacBuche/bug/4309/use_correct_previous

Fixes #4309: Add correct xml previous migration
Fixes #4313: Fixes too long name in Directive display, so directive can
still be used
Merge pull request #409 from VinceMacBuche/4313/fix_directive_display

Fixes #4313: Fixes too long name in Directive display, so directive can
Fixes #4324: Do not modify Rule modified events in xml migration 4 5
Merge pull request #410 from VinceMacBuche/bug/4324/do_not_migrate_rule_modified_events

Fixes #4324: Do not modify Rule modified events in xml migration 4 5
Change version of pom.xml to 2.9.2-SNAPSHOT