Recommendation v1

[ckertam]

Create a recommendation module according to tags

It should recommend matching stories to users according to the story the user liked and tags.

It will do that with sublabel and upperlabels

[ckertam]

I handled tag related recommendation. For now recommendations only updated when the user goes to recommendation page.

It works as follows for now, according to user's liked stories system sends a SPARQL sql and it returns subclasses or superclasses of that tag's wikidata_id. Then if a wikidata_id exists in any story the storyh will be added to users's recommendation list.

Only 3 stories shown at once and there is a counter in all stories in recommendation.

The system try to show less shown recommendation stories.