Dashboard goal

Improve dashboard UI to closely follow new mocks and show data related to the user logged in.

Things missing:
- Show Monthly Goals $ amount
- Show Spent Today $ amount

Those may require us to play around Parse Cloud Code to create custom functions that would take care of this on the server side.

Taking the missing bits aside, this should resolve #25 at its core.

/cc @fcduarte @amitbharadwaj