Treatment of Unicode characters varies among databases. This change
adds support for Unicode characters in the following fields:
* Realms: display name, HTML display name
* Users: username, given name, last name, attribute values
* Groups: name, attribute values
* Components: attribute values
* Roles: name
* Descriptions of objects
Unicode support for the rest of the fields depends on database vendor
and is described in the installation guide in more detail.
