Remove the mako templating
Remove requirement from setup.py
Remove mako test specific files

These files now live in the pyramid_mako git repository...
Require the pyramid_mako package

This is mainly for backwards compatibility.
Import mako from the proper location...
Remove last references to mako

We remove the default addition of .mak/.mako files in the configuration
object, and we remove the test to see if it is has been defined as a
renderer.
Remove chameleon as a dependency in setup.py
Remove the Chameleon renderer from renderers.py
Remove chameleon files
Remove Chameleon specific interfaces
Remove chameleon from default renderers list
Remove traces of Chameleon from tests/fixers
Remove bfg fixers script from entry points
Remove fixes sub-package
Remove Chameleon specific support in i18n
Comment out tests that require Chameleon

These tests should be rewritten to use the JSON or string renderer
instead.
Remove Chameleon specific renderer tests
Remove Chameleon only fixtures files.
Remove TestTemplateRenderFactory which is Chameleon only
Replace .txt renderer with JSON

Update tests expected results so that they now correctly look for the
return value returned from the JSON renderer.