Implement Jekyll style includes

This pull request:
- Replaces the `include` tag in `liquid.patch.js` to conform to the Jekyll include style, it borrows heavily from the jekyll implementation [here](https://github.com/jekyll/jekyll/blob/master/lib/jekyll/tags/include.rb)
- Performs liquid parse before markdown is processed, helps avoid the liquid tags from getting :facepunch: :boom:
- Updates the liquid.js file to most current implementation. There didn't seem to be many changes other than an update to `cbSplit` (Cross Browser Split)

If you want to see a cute example of this working, drive this PR to this link:
`http://localhost:8000/#kingdom-building-ministries/kingdom-building-ministries-site/edit/test-prose/blog/_posts/2013-12-17-christmas-puppy.md`