Merge pull request #401 from nsendetzky/master

Updates translations, fixes nested transaction and adds minified JS files
Merge pull request #402 from nsendetzky/master

Provides onCopySelectedItems for all TreeUi implementations
Merge pull request #403 from nsendetzky/master

Removes clean target from client/extjs and updates generated core JS file
Merge pull request #404 from nsendetzky/master

Allows large texts in order product/service attributes and moves service attribute processing to providers
Merge pull request #405 from nsendetzky/master

Fixes JSLint warnings
Merge pull request #406 from nsendetzky/master

Fixes several bugs in the copy code of the admin interface and improves extension template
Merge pull request #407 from nsendetzky/master

Shows disabled copy option for categories
Merge pull request #408 from nsendetzky/master

Reverts copying items in admin interface due to problems with referenced items
Merge pull request #409 from nsendetzky/master

Updates composer file
Implements order delivery e-mails
Merge pull request #411 from nsendetzky/master

Improves translation, extension template and UTF-8 character tests
Streamlines delivery intro templates
Updates translations for delivery e-mails
Merge pull request #412 from nsendetzky/2014-01-08_email-delivery

Implements order delivery e-mails