Database and DAOHelper corrected
Merge branch 'db' of https://github.com/rogerfernandezg/digitalcampus into qa
Initial commit
Defined NewSubjectActivity and set all activitias as portrait
Added ListView in the layout
New strings added
Database checkDB changed
New imports added
SplashScreen starts the database now
Action bar add button added
Database updated
Funtion deleteSubject added
Delet by subject id added
Save subject relations in the database
Merge branch 'subjects' of https://github.com/rogerfernandezg/digitalcampus into student_management

Conflicts:
	src/com/llenguatges/digitalcampus/objects/Student.java
	src/com/llenguatges/digitalcampus/students/StudentsActivity.java