Fixed header recongnition in ImageTransform filter.
Merge pull request #49 from kormik/fix/ImageTransform-header

Fixed header recongnition in ImageTransform filter.
VP-129 Conversion to absolute paths in Overview criteria
Merge pull request #51 from dlu-gs/hotfix/vp-129-sym-ref-in-overview

VP-129 Conversion to absolute paths in Overview criteria
VP-163 \Vivo\CMS\UI\AbstractForm properly passes its properties to the
view model
Merge pull request #55 from dlu-gs/hotfix/vp-163-abstract-form-view

VP-163 \Vivo\CMS\UI\AbstractForm properly passes its properties to the
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