Corrected Login + Upgraded Meteor

- Upgraded to Meteor 0.8.3
- User is no longer logged out after refresh
- Reinstalled packages
- Got rid of stupid setInterval thing that toggles H1 elements
Move/Renamed mainmenu files to user/dashboard folder
Rename mainMenu Template to dashboard
WIP: Basic dashboard layout

Got a hardcoded list of boards in the dashboard with a nav bar at the top.
And an Add board button. Clicking that button is supposed to make a modal
pop up but I can't get the modal to work properly.