With the ansible configuration centralized into a top level torque-sites
directory (roles), the majority of the tasks main.yml and supporting
files can be removed with the roles being added to the top level
playbook.

This required a change to the base roles:
* torquedataconnect_sheet_name can be different from the competition

A lot of the configuration was inline blocks that were dumped directly
into LocalSettings.php.  This change separates those configurations out
into their own files for easier maintenance and documentation.

Issue #59: Change MediaWiki configurations to have multiple files