Merge branch 'release/3.2.3'

Replace contains "http" with contains "://"

Merge branch 'release/3.1.3'

Allow `author_profile` to be toggled in a _layout (eg. archive-taxonomy.html)
- Close #285

Merge branch 'release/3.1.2'

Improve nav_list helper to be used with any type of navigation list defined in navigation.yml data file
- Close #272

Merge branch 'release/3.0.0'

Merge branch 'feature/documentation-and-demo' into develop

Make base_path available to all includes that need it

Style tweaks to pagination, right sidebar, and background color

Add post pagination to sidebar and make minor styling alterations

Expand on nav_list styles
- Consolidate SCSS partials

Build navigation list include helper
- Update navigation.yml to support multiple navigations and levels
- Optional include navigation into left sidebar

Merge branch 'feature/spit-and-polish' into develop

Create includes for greater layout flexibility