Removed the jquery-ui dependency as it was currently only being used in the initialization javascript to show a dummy modal popup for demonstration purposes when you do not have your own ```onView``` handler defined.
As viewing a file is totally dependant of the _type_ of file you are viewing, a generic default view solution was never implemented and it is best that the user actually sets up his own logic for viewing uploaded files (e.g. redirect, modal popup or something else).

Resolves issue #4