display tasks in user profile

[punchagan]

A user profile should show the tasks for each user.

• For a contributor, it should show the tasks claimed (active claims) and tasks allotted.
• For a mentor, it should show all the tasks being mentored.

[madhusudancs]

This issue is partly fixed in revisions 1b09248, 1888491 and dae126a. I am not marking this issue as closed because, I am still not sure if the current list displays the list of tasks that user completes and get accepted. So let us wait until I make sure about it

[punchagan]

Great! Awesomeness!