Reconcile max-width of .row across repos

[webinista]

Problem

Inconsistent max-width values across repos create problems for keeping everything in sync. A mix of multiple definitions and high specificity selectors means that .row doesn't behave the same way everywhere.

Selectors to refactor

From _va.scss

body .row.full {
  width: 100%;
  max-width: 100%;
}

.va-notice--banner {
  .row {
    max-width: 70em;
  }
}

From _hca.scss

body .row {
  max-width: 62.5em;
}

Suggested fixes:

• Replace body .row.full selector with .va-row--full selector.
• Modify markup of include/header.html so that .va-notice--banner .row no longer exists.
• Change body .row to .row

[webinista]

Closing. It's irrelevant for now, since we're eventually removing Foundation.