Add the "create task" icon back in

I think it was mistakenly removed in a merge, since all of the other tab icons
are still there.

Change-Id: I50ed213b122ae0121230786b8dfa3f3c107c0129
auto gen for create and update + difference when updating a task.
@author sla ywen
Change-Id: Ic86e10f35d3d3ed52f5d594d95835304a5905c44
Merge branch 'dev' into feature/gui2
SHOULD BE BUG FREE-> changing status works, and create task should consistently work.
Conflicts:
	TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/presenter/TaskPresenter.java
Change-Id: Ia81acd259b2afc843b7913bc90d4f97bcaf8c619
Merge branch 'dev' into feature/gui2

Conflicts:
	TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/presenter/TaskPresenter.java
Merge branch 'dev' into feature/gui2

Conflicts:
	TaskManager/src/main/java/edu/wpi/cs/wpisuitetng/modules/taskmanager/presenter/TaskPresenter.java