Entferne index.html
Add task, activity and category scaffold
Dashboard with tab control (using jQuery UI)
Integrate Bootstrap
More task-card layout, and preparing task-card for drag and drop by setting data-task-id
Add drag and drop ready user-portraits to the dashboard index
Clean up:

* Remove dashboard.css.scss (dashboard.css is used instead)
* Remove layout.css (Bootstrap is used instead)
* Remove generic header of dashboard index view
Prepare drag and drop, user portraits are draggable now
Task card now resize with its content
Move user portraits to front
Enabled drag and drop of user portraits to task cards
Dashboard index view: Move tabs and users to partial views
Add highscore to dashboard index view
Display recent activities on dashboard index
Add time ago in words (e.g. 5 days, 2 month)
Add german locales and make german the default language
Change order of activities (most recent is displayed first)
Dragging a user portrait to a task-card now creates a new activity and updates the user score
Improve dashboard layout
Display rank in score (1, 2, 3 etc.) and add glyphicon for total points