Add list.js for filtering articles (another try for foodcoops#143)
Add delay to list.js search
Always show article category headers (do not unlist them on list.js search)
Add dismiss button to sidebars in group_order form (idea stolen from foodcoops#143)
Add button to clear article search (list.js customization)
Hide article category if no article matches the search
list.unlist.js: Use jQuery's toggleClass instead of native if-else (just for briefness)
Reuse some list.js standard template functions (thanks to wvengen https://gist.github.com/wvengen/6784056)
Move list.js extensions to plugins
Merge pull request #180 from foodcoop-rostock/search-article-list-modified

Search articles in group_orders form