Integrate GUI for setting preferences

A GUI for setting the preferences is needed.

Some thoughts:
- to keep the GUI simple, i think it is best to integrate the preferences gui as a view
- this view can be hidden (for example from a menu entry in application menu "(x) Show Preferences")
- the view will offer a tabbed pane with tabs for ("Streamtastic", "Streamripper", "advanced")
- the advanced tab can be hidden (best from the "Streamtastic" tab, "(x) show advanced configuration")
- the "Streamtastic" tab will offer general application settings
- the "Streamripper" tab is for setting up the ripping parameters
- finally the "advanced" tab will show a table with Parameter - Value mappings for direct editing

Implementation
- integration in 2 Steps:
( I ) provide "advanced" tab
 - this tab should work automaticly
 - no code changes should be needed if new config parameters are added
 - provide advanced cell editors (drop down boxes for constant values etc.., input validation)

( II ) provide "Streamtastic" and "Streamripper" tabs
 - provide simple to use and well documentated pages
 - checkboxes, labels, tooltips...

See specification link for a preview on how preferences view might look like:
UPDATE: new preview screenshot available on specification link