VP-160 Support for <li> class in Navigation
Merge pull request #56 from dlu-gs/feature/vp-160-navigation-attribs

VP-160 Support for <li> class in Navigation
VP-171 AllEmpty condition + VivoInvalid validator
Merge pull request #58 from dlu-gs/feature/vp-171-all-empty-condition

VP-171 AllEmpty condition + VivoInvalid validator
VP-171 'At least' groups implemented in VivoInputFilter
Merge pull request #59 from dlu-gs/feature/vp-171-all-empty-condition

VP-171 'At least' groups implemented in VivoInputFilter
VP-174 Document 'published' property editable in BE
Merge pull request #60 from dlu-gs/hotfix/vp-174-doc-published-property

VP-174 Document 'published' property editable in BE
Editor must be instance of EditorInterface; fix Backend\ConfigException in Editor\Content
Deletion bad ConfigException
Fileboard api
HTML fix (tr) in finder template
CMS and Module factories are in Vivo\CMS\Api namespace

Moved from Vivo\Service.
Merge branch 'develop' into fileboard