Made changes through out module to reference both the new constant and function accordingly.

Added ADVAGG_COOKIE_NAME constant.

Changed include_once() to include().

Moved more JS functions to the JS include file.

Moved initial variable sets from advagg_init() to advagg_enable(), no need to have these called every time.

Fixed hook_process_html() so it actually calls the CSS and JS alter functions now (although they are currently not doing anything because they need to be rebuilt for D7).
Initial separation into multiple files for easier management.
Initial rework of Admin UI (now located at: /admin/config/development/performance).

Issue #1374098 by alexweber, mikeytown2: use jquery_update_get_version() as fallback for jquery version. Fixed doc.

Issue #1374098 by alexweber, mikeytown2: use jquery_update_get_version() as fallback for jquery version.

Issue #1338188 by fivefrank: PostgreSQL: Improper argument to SQL lpad() in advagg_bundler_analysis().