Major refactor of directories and roles, updates to syntax, and bug fixes

This was a large rework of the general structure of the wuvt ansible repo.
As part of the process of adding roles for creating ldap and nfs clients which
enable the new central auth mechanism, it was decided to clean up as well
as update all the existing ansible roles, plays, and associated files. This
committ comprises the largest portion of major revisions that dont directly
contribute new roles, plays, or functionality. The exception to this are the
ldap-client and nfs-client plays.
Update and expand the webserver roles, add a db role, add group_vars

Mainly due to pretty significant differences in the db's each machine will be running
the web and db roles were removed and will instead will be just reworked as tasks of
each webserver.
Write the file server role for both nfs and samba file shares
Complete LDAP server role and general file cleanup
Deleted old website role structure
Merge pull request #1 from wuvt/central-auth

Central auth