Updated cloned slides.

- updated selector for selecting the last slide.
- added 'clone' classes to clones
Updated code that sets the 'start item' to index.

Since there is now a cloned slide first slide, the 'start item' can be directly
equal to the index#.

Also updated the 'len' variable. This is can be directly equal to 'li.length' as
the cloned slides are counted by the index.
Removed hard-coded 'float: left' from list items. Moved to css.
Housekeeping on unslider.css
Commented out scipts' original 'Patch for fluid width'.

Interferes with setting max-width. Consider fixing later.
Housekeeping. added newline at eof
Added variable to contain length of items in the list.

This will be used later to set the points at which the list should reset
positions.
Commented out further code that sets and animated height of elements.

Have to resolve and insert back in later.
Created slider 'loop'.

This is done by resetting the position when it reaches the 'clone' on either side
 to its 'original' slide position.

i.e. When the slider reaches the 'clone' of the first slide, the position is reset to the
'original' first slide after the animation completes.

The index is also reset to the relevent value.