Add help text with links to existing vocabularies

components/devices/AggregationTypeDialog.vue

components/devices/CompartmentDialog.vue

components/devices/CvPropertyDialog.vue

components/devices/DeviceTypeDialog.vue

components/devices/MeasuredQuantityUnitDialog.vue

components/devices/SamplingMediaDialog.vue

components/devices/UnitDialog.vue

components/platforms/PlatformTypeDialog.vue

components/shared/ActionTypeDialog.vue

components/shared/ContactRoleDialog.vue

components/shared/ManufacturerDialog.vue

components/shared/ProvenanceHint.vue

components/shared/StatusDialog.vue

components/sites/SiteTypeDialog.vue

components/sites/SiteUsageDialog.vue