Use pages for documentation, not posts, fixes #980.
Changed link to liquid, was going to a dead link and it really bothered me.
Corrected additional liquid link on the Welcome page.
Changed the liquid link in posts.
Changed liquid link of the homepage.
Merge pull request #1073 from zachgersh/link_change

Changed link to liquid, was going to a dead link and it really bothered me
Update history to reflect merge of #1073.
Merge benbalter:docs-pages #985
Update history to reflect merge of #985. Closes #980.
Make Upgrading docs page a Page.
Add permalink to docs/upgrading/
Fix links to /docs/ in the site.
Moving /docs to /docs/home
Can't use post_url to ask for the url's of the docs anymore.
Fixed some things on the site.