NXP-15145: factor out code handling select items for usual selections and directory selections
NXP-15145: define select widget types handling aggregates
NXP-15145: handle migation of old selectOne/selectMany directory JSF components, now replaced by facelet tag handlers, and add missing features to new selectItems components + fix aggregate widget types label computation
NXP-13805: remove old deprecated suggest box
NXP-14230: rely on migration helper to fix tab actions without an absolute path
NXP-13806: remove reference to nxa4j library (removed)
NXP-15145: fix init of DirectorySelectOneListboxHandler attributes