Added visual indicator for add task form
Added visual indicator for add task form

Now, when you click on 'add task', the plus switches to a minus
so the user has a visual indicator that they can close the form.

Change-Id: I574a659192d3a7479bef0e04cd158922bbf4dcb7

ColdrickSotK/storyboard-webclient,ColdrickSotK/storyboard-webclient,ColdrickSotK/storyboard-webclient