adds test for adding users
adds test  for removing users from tasks
Merge branch 'multiselect_users' of github.com:slash-slash-no-comment-WPI-cs3733/wpi-suite into Add_remove_users_test

Conflicts:
	TaskManager/src/main/java/taskManager/view/ScrollList.java
Merge remote-tracking branch 'origin/dev-gradle' into Add_remove_users_test
fixes comments
Merge branch 'dev-gradle' of github.com:slash-slash-no-comment-WPI-cs3733/wpi-suite into Add_remove_users_test
Merge branch 'dev-gradle' of github.com:slash-slash-no-comment-WPI-cs3733/wpi-suite into dev-gradle