modified css to display appender options

ongoing work on short intro

Fixed bug #27.

- added capability of setting collections of simple properties in PropertySetter and Joran
- small bug fix in Pattern class (a trailing / in the pattern string would cause the addition of an extra 
component with an empty string)

In BasicJoranTest, the method testTurboFilterWithStringList fails because Joran doesn't add correctly
users to the userList. Watch bug #27 for more info.

ConfigurationAction now pushes and pops the context to and from the objectStack, so that it is usable
by following actions.
Added an implementation of TurboFilter that allows debug level for selected users only.
Work in progress: the <user> element still makes Joran caugh a bit.

Other minor fixes

Still wondering if something better can be done, especially about the getActiveFileName method of RollingPolicy, that serves more
the purpose of a "makeInitialFileName" than just a getter to a value.

aligning method with the new name, i.e. TurboFilter

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Changed package name c.q.l.classic.filter to c.q.l.classic.turbo

Trying to remote the activeFileName/fileName dual information in logback configuration.
The current version works in some situations but not all, and does not passes all the tests.
Please use with caution if building logback from repository.

Changing the EvaluatorAction pattern from configuration/evaluator to */evaluator lets the user create evaluators to go in the context's eval map *and* evaluators inside filter elements.
Same for MatcherAction

- Loggers now go through filter attached to their parent (loggerContext) before 
  any decision.

  This slows down decision making a little, but is much more flexible.

- Context is no longer FilterAttachable. This change was necessary in order to allow
  LoggerContext to be ClassicFilterAttachable