Initial commit of the dashboard module.

Fixes #31
Integrate the dashboard into partuniverse.

Ticket #31
Created a dashboard item for Items that needs restocking.
Merge pull request #45 from enko/feature/dashboard

Implement the dashboards
Merge master
Added a navigation.

Fixes #30
Reworked all the breadcrumbs.
Merge pull request #47 from enko/feature/navigation

Added a navigation.
Use a common lingo for the urls and their names.
Fix the navigation for unauthenticated users.
Removed the unpractical heads for the listings.
Only show the dashboard to logged in users.
Merge master
Extending test cases for external function to get all Parts with their on stock amount