Adds button copy.
Adds copy to context menu.
Removes copy from locale site menu.
Makes implementation easier.
Removing one else if.
Removes redundant code.
Minor changes.
Some improvements.
Adding deleteItems function.
Adding header.
FIxes bug in the html test.
Merge pull request #38 from doleiynyk/2013-01-23_Copy_items_via_the_context_menu

Adds ability to copy items via the context menu in the admin interface
Fixing of searchItems method.
Moves delete Item to Abstract.
add bundle handling to xml generation of delivery service provider
add bundle handling to xml generation of delivery service provider
Fixing bug in type search.
Replaces new lines by <br/> tags in head part of the confirmation e-mail
Coding style fix.
Improvement: array_keys instead of array_unique .