Recommender refactoring - Namings

[Scienfitz]

Strategies and Recommenders are currently beignrefactored to become one an the same thing

Having said that, we need a name for what strategies were previously. Suggestions so far

• meta
• composite
• hybrid

Imo meta is the only one that hasnt the flavor of talking about the searchspace. Also, its in analogy to meta-studies in the academic literature.

Argument agains hybrid is that its already in use and the naive hybrid would have to be changed accordingly

The NaiveHybridRecommender should be renamed to clarify that its not part of 1). My suggestion NaiveHybridSearchspaceRecommender

We might need another level of distinction between whatever the name for 1) is and the pure recommenders that existed so far. Ie what at this moment is Recommender would be renamed to whatever we choose to reflect that. PureRecommender is also my suggestion. But im not 100% sure if thats what we want and need. If we do not introduce such a distinction it would be possible to use meta-recommenders inside meta-recommenders... needed?

@AVHopp @AdrianSosic

[Scienfitz]

Closed with #146