Renamed for manager.
#24 Add exam ORM class.
#24 Add publisher layout XML files & modified some XML name.

strings.xml
- Add some string to use in publisher module.
#24 Add DAO & default data XML.
#24 Create publisher activity

Included Add, Edit, List, 3 Activity
#24 Add link to publisher activity and do refactoring.
Source code rebuild.
Merge pull request #25 from MilesChou/24-exam-module

Exam module