Fixes selecting a suggested product name in autocomplete list of search filter
Checks for non-numeric quantity values for ordered products
Fixes product position stability in delete/re-insert situations
Enables reverse sorting and uses better symbols for pagination
Shows price rebates in product list view
Makes product stock levels more prominent in catalog detail view
Improves stock level texts for catalog detail views
Increases price value and rebate in percent in catalog detail view
Adds hint on the confirmation page for the e-mail that will be sent
Merge pull request #522 from nsendetzky/master

Bugfixes and usability improvements