remove ZombieEmail
edited names
Signed of with student id
Merge remote-tracking branch 'origin/ZombieStorage'

Conflicts:
	src/zombietask/ZombieTaskCommandHandler.java
Merge remote-tracking branch 'origin/UI'

Conflicts:
	src/zombietask/ZombieTaskCommandHandler.java
removed redundant exceptions, tagged with matric no
re-tagged matric no to intended format
added collated files, updated javadocs
pass all test cases
pass all test cases