start implementing new-fragment-order
as fragments can now participate in many different stories

new entity relation class StoryFragment added

restructured fragment adding logic

SpringJUnit4ClassRunner is now used to run tests,
which allows to reuse configuration

Springockito (https://bitbucket.org/kubek2k/springockito/wiki/Home) is used to mock DAO classes in test context
fragment adding / story publishing functionality of v1 works
implement new fragment collection architecture
take II
Merge branch 'new-fragment-order'