ZExt\Html\Tag: phpdocs fixed and improved
ZExt\Html\MultiElementAbstract: removeElements() added, phpdocs fixed and improved
ZExt\Html\Navigation: minor phpdoc fix
ZExt\Html\Pagination: pagination control added
ZExt\Html\Table: rewrited (to ver. 2.0): parts (thead, tbody, tfoot) added, colgroups added