Hotfix: GH-101: Match Portal+Docs Nav Breakpoint

[wesleyboar]

Overview

Make CMS match Portal & Docs navbar collapse breakpoint.

Caveat: This makes a stand-alone CMS navbar collapse for a wider screen than it did before (and than is necessary). For CMS's that have a Portal, there is no change.

Changes

• New/Fix: Use navbar-expand-lg (for now) to match Portal & Docs.

Testing

• Load Docs, CMS, and Portal.
• Ensure all three have the same navbar styling and collapsing at these breakpoints:
  • ≥ 1200px
  • 576px – 1200px
  • < 576px

Notes

• Ideally CSS can change media queries to match diff markup per subsite.
• But there is not a feasible CSS way to do this.
• And the effort for a way it can be done (nesting rules) is too great.
• So great an effort I might as well update Portal & Docs markup.