Remove schematic submodule

If you're using schematic, you need to:

1. install schematic into vendor-local

2. remove the now unmaintained, unversioned vendor/src/schematic/ directory

3. update the deploy code to use the correct schematic path

4. update your documentation regarding running migrations because
   schematic is in a new place
Merge pull request #53 from willkg/remove-schematic-2

Remove schematic submodule
Upgrade bleach to 1.2.2

This updates bleach from 1.1.5 to 1.2.2.

* linkify changed significantly
* delinkify is gone

See the CHANGES file for more details. https://github.com/jsocol/bleach/blob/master/CHANGES