lib: Add a config.php file

Issue #69.
lib: Add a db.php file

Issue #69.
lib: Add a string.php file

Issue #69.
db.php: Add pip_db_table_create()

Issue #69.
Add an www/admin/ directory

Issue #69.
build: Add support for absolute paths in content hashing
_page.html: Add absolute paths for external content
Add an admin/setup.php File

Issue #69.
db.php: Use more explicit param names in pip_db_table_create()
config.php: Add an Engine attribute

Issue #69.
config.php: Add a database schema property

Issue #69.
db.php: Create new tables with engine attribute

Issue #69.
setup.{php,html}: Create tables

Issue #69.
config.php: Moooar whitespace!

Issue #69.