Add simple implementation of star/unstar feature via fever api
Fixes small typo in mark_as_unread-spec
Adds spec tests for star/unstar (fever_api) feature
Renames method and queries Story directly
Implements handling of fever api call: with_ids
removes debug output that was pushed by accident
Merge pull request #165 from christianschmidt/master

Implement Star/Unstar-Feature via fever_api