Feedback from guideline. #62

* mapUnderscoreToCamelCase changed to enable(true)
* typeAlias of entity enabled
* Refactoring mapper file

Please review #62, and merge to master branch.

**[Note]**
I have tested under the following environment because not support spring-security 3.2 as test application.
* spring-security version change to 3.1.4.RELEASE(revert to 3.1.4.RELEASE on local)
* terasoluna-gfw-security-web/domain version change to 1.0.1.RELEASE(revert to 1.0.1.RELEASE on local)