Merge pull request #81 from MorganDawe/7.x

7.x
serialized associative array for passing
resolved local conflicts
removed unused variable
deleting temporary files from zip ingest
replaced variable, minor cleanup
Merge pull request #84 from willtp87/7.x.delete_tmp_files

deleting temporary files from zip ingest

Tested locally, and saw that temporary files were made while the ingest was occurring.  Investigating the directory after the process finished showed that /tmp was cleared of files the process created.
Merge pull request #83 from ajstanley/7.x

added file sorting
Merge branch '7.x' of https://github.com/Islandora/islandora_solution_pack_book into 7.x