Added a LoadPreventer which manages adding and removing dummy iframes from the dom

- This prevents the infinite loading icon in IE8 and below (does not
happen for > ie8)

#215
Minified/compressed loadPreventer change
Modified the attachedTo member to be an integer that is incremented

- Essentially just reference counts the connections that are attached to
the loadPreventer
- Also changed the way I create garbage frames.  Moved the variable into
the inner closure

#215
Minified/compiled code review comments
Made code review comment changes

#215
Compiled/minified code review comment changes

#215