Doing some refactoring related to revisions.
Merge pull request #50 from tanskanm/master

Slicing html and added documentation folder
Entity changes based on the revision model, xsd-files for the data that needs version control.
Pull merge.
Merge pull request #51 from tanskanm/master

removed project folder
Restored accidentally deleted files.
Revisioning system design diagrams.
Merge branch 'master' of https://github.com/Tietoarkisto/metka
Specified the data relationship in revision.
Fixes and additions to configuration description as well as examples of the configuration JSON files for series and publication.
merging