saveQuestion, update(Question), getAnswers, saveAnswer, getMyAnswer.

With this changeset the spring servlet configuration is separeted from the
application configuration. This will result in a main context and a servlet
context, holding only spring mvc information.

This change has a very nice side effekt: Spring AOP beans will be loaded
only once in application context, not a second time in mvc servlet context.

Task #4027: getQuestionById fixes if a list of answers exist which could
not morphed by self

The properties are needed by the client and must not be ignored.

doesnt throw exceptions if fields are not set. remove info output