Add facet content type group with user friendly labels and aggregated groups of file types

[Mandalka]

Add new facet content type group with user friendly groups and labels of similar content types like videos, audios, spreadsheets or text documents, even if file types of different software.

[Mandalka]

Added this new standard facet to meta data management apps, so it will be set up out of the box, even if custom facets, thesaurus or ontologies config.