The great copyright line purge of 2013
Return valid JSON /v2/apps/:guid/bits

[Finishes #57591542]

Signed-off-by: Aram Price <aprice@pivotallabs.com>
Upload buildpack cache in background
Restore logging around blobstore upload
Remove buildpack cache and app package from blobstore in background
Deactivate plans that are absent from v2 service broker catalogs.

[Finishes #57961262]
Merge remote-tracking branch 'origin/master' into fix_events_pagination