fixed title/description overlapping and added org matedata to the content node
Updates nav 'topics' bar to have > and < as symbols.
Makes nav sidebar disappear when click outside of it.
Fixes linting.
Merge pull request #2570 from rtibbles/navbar

Navbar hide/show tweaks
Merge pull request #2571 from 66eli77/sidebar_org_metadata

fixed title/description overlapping and added org matedata to the conten...
Greys out page when sidebar out. All clicks outside sidebar now close sidebar.
Fixes DOM scope issues/nits.
Merge branch 'develop' into feature/2417-add-a-base-test-suite-for-ka-lite