Show only personal projects on user page

When I visit user profile page I see all projects he have access too (if i can also access same projects).
That means I see a list of hundreds projects if he joined several groups. ![Screenshot 2014-05-30 18.24.43](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/5209c0cb01/Screenshot_2014-05-30_18.24.43.png)

It inefficient because:

* Slow page load if a lot of projects
* Hard to find his personal projects

I propose to replace it with `Personal projects` list.

It has next advantages:

* we don't load huge useless list of projects
* I can see if user have personal projects I have access to
* faster page load. We don't load all projects from all groups where user invited

![Screenshot 2014-05-30 18.20.29](https://dev.gitlab.org/uploads/dzaporozhets/gitlabhq/8a5d02a00d/Screenshot_2014-05-30_18.20.29.png)

Partly fixes #1135