When we use Spark on YARN and have AllJobPage via ResourceManager's proxy, the link URL in objects which represent each job on timeline view is wrong.

In timeline-view.js, the link is generated as follows.
```
window.location.href = "job/?id=" + getJobId(this);
```

This assumes the URL displayed on the web browser ends with "jobs/" but when we access AllJobPage via the proxy, the url displayed does not end with "jobs/"

The proxy doesn't return status code 301 or 302 so the url displayed still indicates the base url, not "/jobs" even though displaying AllJobPages.

![2015-05-07 3 34 37](https://cloud.githubusercontent.com/assets/4736016/7501079/a8507ad6-f46c-11e4-9bed-62abea170f4c.png)

Author: Kousuke Saruta <sarutak@oss.nttdata.co.jp>

Closes #5947 from sarutak/fix-link-in-timeline and squashes the following commits:

aaf40e1 [Kousuke Saruta] Added Copyright for vis.js
01bee7b [Kousuke Saruta] Fixed timeline-view.js in order to get correct href