Update batch and add cleanup_mods.xsl

Submodule islandora_batch 9993977..522eb3b:
  > Add optional parameter for namespace
Submodule islandora_solution_pack_compound 69063bb..1d9d8b8:
  > Merge pull request #8 from adam-vessey/7.x-hooked-access
Submodule islandora_xml_forms 12c180a..d5afea2:
  > Add FVLC's cleanup_mods.xsl