[int tests] Implemented xml-file-less integration tests. Did a little refactoring of test methods. Failing tests will be implemented in next commit.
[int tests] Added negative tests. Changed default log level in negative tests to INFO. Made PropertyBootstrapped[...] print debugging information to DEBUG instead of INFO.
[int tests] Added implementation for mybatis-guice integration test.
[int tests] Cleaned up pom.xml's