Add new images on left click only when really needed.

also refactored out a few more functions.
loopCopy is now part of slider object literal to avoid
'multiplicity' effect.

whatever happened to michael keaton?
LeftSlide ReUp works.
Clean up process images function.

is prettier now.
Hide arrows until position is set.

until after ajax call.  prettier this way.
Fix leftSlider (again).
Create rightSlide animation.

Fixes #14 and Fixes #13

need to:

-add testing... might be time to look into jasmine
Merge pull request #13 from vipyne/clone-fix

Add new images on left click only when really needed.