ISLANDORA-742 forgetting objects from cache on purge.
ISLANDORA-743 added the hook: postprocess_solution_pack and some style
clean
up
Merge pull request #163 from willtp87/ISLANDORA-743

Islandora 743
ISLANDORA-743  Before the hook was not firing at the right time.
ISLANDORA-743  Hook firing without session variable.
some code style fixes
ISLANDORA-587 added json mime/extension mapping
some style fixes
islandora-624 created get_parent_collections_from_pid
some code style fixes
ISLANDORA-624  redirect after object purge now sending one to the first
identifiable parent collection
Merge pull request #167 from willtp87/ISLANDORA-587

Islandora 587
Merge pull request #168 from willtp87/ISLANDORA-624

Islandora 624
fixed conflict
Merge pull request #164 from willtp87/ISLANDORA-743

ISLANDORA-743  Before the hook was not firing at the right time.
ISLANDORA-731 Starting API documentation.
ISLANDORA-731 missed page_number parameter for islandora_tabs hook
documentation.
ISLANDORA_745 renamed postprocess solution pack hook
Merge pull request #170 from willtp87/ISLANDORA-745

ISLANDORA_745 renamed postprocess solution pack hook
Merge pull request #169 from willtp87/ISLANDORA-731

Islandora 731