- fix layout of sidebar and main content
- clean up relbar and rellinks
- change font for main content area
- add warning admonition style
- mopping up the remains
Merge branch 'feature.sphinx_theme_tb3' of github.com:stevepiercy/substanced into stevepiercy-feature.sphinx_theme_tb3
Merge branch 'stevepiercy-feature.sphinx_theme_tb3' into feature.sphinx_theme_tb3