Implement a new build view
Orginal comment: https://gitlab.com/gitlab-org/gitlab-ce/issues/2932#note_2647887
Here's what I see as the intentional changes:
- Improve job bar (color icons, upcasing, pipe separator)
- Improve status and build meta info (combine into single line, under job bar)
- Improve pull commit message to section above output (instead of sidebar)
- Remove redundant meta info from sidebar (build # and other builds)
- Improve colors of job output
- Overall color/layout around the borders