Initial version of the category import
Delete categories implemented
Set proper position and import images
Made compatible with the AvS_FastSimpleImport
Added the ability to escape category paths with \
processCategoryImport functionality
Fixed a bug where images were redownloaded multiple times
Merge branch 'refs/heads/redownload-images'

* refs/heads/redownload-images:
  Fixed a bug where images were redownloaded multiple times