Documentation/DirectoryStructure: 0.2.0 update

This updates the directory structure documentation to reflect the switch
from the old LAMP implementation to the new Clojure project.
Documentation/CodeStyle: 0.2.0 update

Remove the references to PHP, add the Google HTML/CSS style guide and
community Clojure style guide.
build: Remove install rules

Remove the make install/uninstall hooks for the build/www directory.
build: 0.2.0 update

We have a fairly hefty diff here, but all we're doing is taking away
things that are no longer need. Here's a brief rundown, with reasons for
each:

 * Website build/install location fluff
 * Webserver checks and modules
     No more webserver stack!

 * Content hashing
     If we're going to use content hashing, then we'll need a Clojure
     solution for this.

 * Remove htmlcompressor.jar
 * Minification of HTML
     We're generating HTML using Clojure's hiccup library.

 * Website options
     Configuration of the website will be handled purely by the tools
     and from within Clojure.

 * Don't recurse into www/

     We're not interested in building anything in the deprecated www
     directory. In there lies only PHP...

 * Change primary source directory to src/

     We check for the existence of the sources by asserting that
     src/pip_db/core.clj exists, not www/index.php.
Remove www/ directory

The witch is dead! This marks the end of development on the PHP/MySQL
implementation of pip-db. From now on, the future is bright with purely
functional data structures and REPLs!
build: Add generated files to CLEANFILES

The old build system used to have a single target to delete the entire
build/www/ directory, but now we're using a more granular system, where
each Makefile is responsible for setting its CLEANFILES to remove all
generated files.