Add code for feeds_xlsimages based on the feeds_dwca
Delete unnecesary dependency
reconfigure the importer and add mappings
Add the bundle to the processor and change the name of the importer
Add some dependencies
Develope the RemoteImageProcessor to import images from urls.

Delete all the code from the DwC-A processor in which this was based and
create a new version based in the FeedsFileProcessor from the  feeds_file_processor
module