membership namedquery cleanup
replaced EJB annotation with cdi's Inject (#97)
listing posts in membership, and tests
fetching memberships with groups and posts

mini-refactor of UserManagerBean to use setter injection
making AbstractEntityView#clazz final
memberships api endpoint

listing
* membership start, end
* group name
* posts as a string list (including öregtag and tag)
using maven resource filtering for persistence.xml configuration

hibernate.show_sql is true for development but false for production
fix typo in install.md
introduces MembershipSorter

sortMembership() is removed from User and Group entities.
Memberships are sorted in the api endpoint.
upgraded to jdk8
using the new streaming api for mapping collections
annotations in Membership and User

User#sviePrimaryMembership is set to lazy fetch
Merge pull request #104 from kir-dev/user-memberships

Membership listing