Fixed row margins on Pipeline Settings page in order to unify styles

On the ```project-name/pipelines/settings``` page, I removed the ```.row``` styling on ```.build-status``` and ```.coverage-report``` as it was causing those rows to not have the same margins as the "CI/CD Pipeline" row.

Now, they are even as you can see below:

![Screen_Shot_2016-12-01_at_12_54_59_PM](/uploads/a7196ff2e8efcdcd072bc2d26634a42d/Screen_Shot_2016-12-01_at_12_54_59_PM.png)

![Screen_Shot_2016-12-01_at_12_53_18_PM](/uploads/615428bab476fcd1baab86837395d800/Screen_Shot_2016-12-01_at_12_53_18_PM.png)

Closes #25098 
cc: @filipa

See merge request !7881