- Improving the async method from RegisterActivity.java
- Adding some mocks with id in UserMockFactory.java
	modified:   src/br/ufrn/dimap/pubshare/activity/RegisterActivity.java
	modified:   src/br/ufrn/dimap/pubshare/mocks/UserMockFactory.java
Merge pull request #40 from danielalencar/master

User logic