couloir_slideshow 6.x-1.6

Moved slideshow settings to block settings for options that should be applied individually.
Added option to disable captions on individual slideshows.

If upgrading, settings will need to be reapplied to individual slideshows on the block settings page since options can now be different for each slideshow. The need to append the slideshow number to the end of the directory name is no longer needed due to the fact that image directories can be set for each slideshow individually. The new setup should reduce many confusions when it comes to setting up multiple slideshows.