Use env vars for all deployment variables.

[ci skip]
Use URL and Path for resolving git location.

[ci skip]
Lint Grunt tasks.

[ci skip]
Add build command instructions to README.

[ci skip]
Adjust `engines` field in `package.json`.

[ci skip]
Whitespace.

[ci skip]
Fix issue with path.join.

[ci skip]
Restructure stylesheets.

[ci skip]
Run a couple of old pages through PanDoc.
Tweaks.
Update moderation.html.md
Update moderation.html.md
Add link to vanillaforums.com to navbar.
Update Bootstrap to 3.2.0.
Update moderation.html.md
Whitespace.
Only affix sidebar when needed.
Cache `.js-footer` element.
Kill off old npm deps.
Adjust Bower deps.