add csarDetail template refs #75

introduced AbstractServlet

the CsarDetailsServlet implementation is fast/dirty
it should show concepts and problems of the current state
baseline for further discussions
Merge pull request #98 from eiselems/75

add csarDetail template, fixes #75



introduced AbstractServlet

the CsarDetailsServlet implementation is fast/dirty
it should show concepts and problems of the current state
baseline for further discussions