ui will receive sort successful messages based on the index that was sorted,
fix cache bugs with errors not being remembered
fixed caching of results to store redos, errors
refactored the sortBookmarks function
fixed bug with sorting failing because of infinite loop...moved stuff around, made progressbar work
added sorting in progress local storage variable, changed about tab
reworded html
reduced manifest version
Merge remote-tracking branch 'SmartBookmarksSorter/devel'