New icons
Popups - better placement
Popups - added close button
Popups can attach scripts
Queue - fixed exit confirmation and "saving..."
Queue - added information about exceptions
Queue code moved to separate file
Ajax errors show alerts instead of divs
Ajax requests are more functional
Html - IDs changed to classes
HtmlHelper tweaks
Better list URLs
Implemented entity removal
List rows moved to separate class
List rows and columns - added IDs
List settings - added placeholder form (#15)
List settings - job scheduling and executing (#15)
Row IDs are computed client-side
List settings - implemented user CSS (closed #23)