Move html_escape out of render

Also "hid" it (Put an underscore in front of it)
Move get_key out of render

Also "hid" it (Put an underscore in front of it)
Move get_partial out of render

Also "hid" it (Put an underscore in front of it)
Update the render doc string
Fix python 2 encoding problem with the new docstr

Python 2 did not like my fancy new doc string with the unicode
filetree
Merge branch 'cleanup-renderer'