View build related data in the dashboard for a specific build

Related to #2.

The build page or `pipeline?id=<pipeline_id>` page should show all the relevant build details from the developer perspective. For example:

1. Who triggered
1. When triggered
1. Sha1 of the build
1. Env variables used
1. List of jobs
1. Status of jobs
1. Test reports

+ Possibility to Retry jobs, Cancel existing jobs and Execution log (only if possible)

If the build is still running, then we should show a progress indicator and show links to relevant items like LOGFILES. It would however be great if we have a possibility to show the LOG output directly on this page.