added: MetaModelInsertTags class

Available inserttags

-- totals, filtersensitive
{{metamodel::total::mod::*}}
{{metamodel::total::ce::*}}

-- item based
{{metamodelitem::table-or-id::item-or-setOfIds::rendersetting}} -> html
output
{{metamodeldetailitem::table-or-id::item::rendersetting}} -> html output

-- attribute based
{{metamodelattribute::table-or-id::item-id::field}} -> value, plain text