minor changes to css/site.css

Added a reference to a snapshot repository. This prevents accidental deployment on release repository.

and not slf4j's logger class.

minor fixes

- SyslogAppender config (yet to be tested in real life)
- Modified SyslogAppenderTest, progress need to be done here, on testWithExceptions

- Modified sample configs
- Added begin of SyslogAppender doc

- DBAppender documentation
- configuration examples
- minor tweaks to site aesthetics
- added illustrations for dbAppender 
- modified .svnignore on src/site

moved deleteTables.sql to appropriate package

moved deleteTables.sql to appropriate package

refactoring onrefactored DBAppender and DBAppenderBase to remove all mentions of classic concepts from core module

Added an option to the SocketAppender to call the getCallerData method on logging events before serializing them so that
the caller data is available on the remote machine.
Minor fix to SimpleSocketServer.java
Reformat only on SocketNode.java

This allows any event to decide the way it should look and any component to use the
same layout for that purpose.