Fixed some metadata to deploy to the new build org
SID-17: Remove unused tabs
Remove Nag object and related classes
Fix test utility method to create users
SID-38: Add new task types and make it required
SID-18: Allow more that 80 chars at task name/summary

- Added a new field "Summary".
- Changed the Name field type to autonumber and the name to Number.
- Fixed a lot of classes and test cases that used the Name field.
- Fixed some failing test cases.
SID-9: Add home page component for tasks

- Add a visualforce page and controller for the list of tasks
- Add a home page component withthe visualforce page