Merge pull request #516 from nsendetzky/master

Implements media infrastructure and uses it for scaling uploaded images
Merge pull request #517 from nsendetzky/master

Updates the mini basket by using the values from the standard basket
Merge pull request #518 from nsendetzky/master

Keeps product list sortation during filtering
Merge pull request #519 from nsendetzky/master

Renames l-product-id to d-... so the parameter is moved to the catalog detail domain
Merge pull request #520 from nsendetzky/master

Displays address language selection only if there are several choices
Merge pull request #521 from nsendetzky/master

Enables filtering when clicking on the attribute name or count
Merge pull request #522 from nsendetzky/master

Bugfixes and usability improvements
Merge pull request #523 from nsendetzky/master

Improves performance test data
Merge pull request #524 from nsendetzky/master

Shows pagination only if necessary and reduces the size of the pagination
Merge pull request #525 from nsendetzky/master

Shows update button only if necessary and uses cleaner mini buttons
Merge pull request #526 from nsendetzky/master

Improves product layout in basket and configurable options
Merge pull request #527 from nsendetzky/master

Improves usability catalog and basket views, makes image zoom more robust
Merge pull request #528 from nsendetzky/master

Updates translations and compiled JS code of the admin interface
Merge pull request #529 from nsendetzky/master

Uses prettyPhoto lightbox for image gallery and splits JS files due to their size
Merge pull request #530 from nsendetzky/master

Improves English translations of stock levels
Merge pull request #531 from nsendetzky/master

Moves CSS/JS/image files to lib/classic/ to allow several templates
Merge pull request #532 from nsendetzky/master

Fixes title of product stock icons
Merge pull request #533 from nsendetzky/master

Enables removing product options in basket without page reload
Prints errors if generating API doc fails
Updates composer file