Merge branch 'saddam-gradle' into 'staging'

src/main/java/softeng/g4/Main.java

src/main/java/softeng/g4/appointment/Appointment.java

src/main/java/softeng/g4/appointment/Reminder.java

src/main/java/softeng/g4/appointment/RequestAppointment.java

.../java/softeng/g4/calendar/SeeCalendarCheckPermission.java

src/main/java/softeng/g4/calendar/SeeCalendarStrategy.java

...ava/softeng/g4/calendar/SeeCalendarWithoutPermission.java

src/main/java/softeng/g4/cli/StudentCLI.java

src/main/java/softeng/g4/cli/TACLI.java

src/main/java/softeng/g4/course/Course.java

src/main/java/softeng/g4/courselist.txt

src/main/java/softeng/g4/user/Admin.java

src/main/java/softeng/g4/user/Student.java

src/main/java/softeng/g4/user/TeachingAssistant.java

src/main/java/softeng/g4/user/User.java

src/main/java/softeng/g4/user/UserStudent.java

src/main/java/softeng/g4/userlist.txt

src/test/java/softeng/g4/user/StudentTest.java

src/test/java/softeng/g4/user/TeachingAssistantTest.java