Ignoring cache/ makes also necessary files ignored:
modules/ctools/page_manager/plugins/cache/page_manager_context.inc
modules/ctools/plugins/cache/simple.inc
modules/ctools/plugins/cache/export_ui.inc

See: https://drupal.org/comment/7001628#comment-7001628

* added web.config and authorize.php
* tweaked settings.php path to also ignore stock example.settings.php file
* tweaked files and private folders paths to include all sites

Only track folder: "sites" exluding the rules stated before.
This allow to track only custom modules/themes and/or 3th party
modules/themes.