Add messages to exceptions and slightly refactor exception handling.

Exceptions are now always passed to the logger. The logger decides based
on configuration whether and how they are logged. Logging messages were
adjusted for consistency.

Additionally, remove unused loggers.

remove swagger annotation from feedbackcontroller, coursecontroller and getter and setter for sortOrder

remove spingfox for ApiIgnore direction
use swagger-maven-plugin to generate swagger.json before compiling rather than
 dynamically generate it on request

Daniel Gerhardt authored 9 years ago and Tom Käsler committed 9 years ago

Reasons:
* not used consistently
* Java signatures are not helpful
* Return type should not be hard-coded in a String

Statistics model now correctly uses value instead of notes for
documentation of properties.

Daniel Gerhardt authored 9 years ago and Tom Käsler committed 9 years ago

* Fix inconsistent whitespaces
* Remove unused imports

Tjark Wilhelm Hoeck authored 9 years ago and Tom Käsler committed 9 years ago

added labeled deprecated rest endpoints to api documentation, commentet and included the feedbackController

Updated copyright year and adjusted header format to be consistent over
all files and with other ARSnova projects.

API specification.
Changed StatisticsController to allow requests without a trailing slash
to be consistent with the other **/statistics paths.

This allows expecting those exceptions in test classes.

This change is needed due to client developer restriction not to round
returned value on client side but on server side, because this would
change sth.

This provides smaller and cleaner Interfaces for each context.

All relevant information about users (e.g. session mebership) are
accessible via UserService.
The method IUserService::getCurrentUser provides information about
the actual logged in user. If no user is logged in, this method will
throw a UnauthorizedException which will end up in 401 HTTP error.

All feedback methods are available in class FeedbackController, all
question methods are available in class QuestionController.

None of the URIs are changed!

Added second URI for method QuestionController::getSkillQuestions that
matches common URI rules in ARSnova:
"/session/{sessionkey}/skillquestions"
Both, the old an the new URI can be used equally.