User Variables (eZURI) improvement

*Title: User Variables (eZURI) improvement.

*Documentation:
User variables (given in url) weren't able contain '/' symbol, because
contents of any user variables starts after given user variable name
and ends with first occurence of '/' in uri.
There was improved new behaviour of ezuri class (see lib/ezutils/classes/ezuri.php)
to fix this issue. For now, contents of user variables starts after given
variable name and ends with next variable name or with end of uri.
Notice that all passed user variable must be placed in the end of
given uri, and after all ordered params of module.
Old behaviour of user variables parsing was not removed, just disabled.
You can turn it on by setting up 'OldStyleUserVariables' ini-setting to 'enabled'
(see settings/template.ini, [ControlSettings] section).
Default value of 'OldStyleUserVariables' ini-setting is 'disabled'.