KAZOO-2638 cache/2 change, cache/3 , retrieve/2
KAZOO-2638 milliwatt use of whapps_call:cache/2
KAZOO-2638 callflow use of whapps_call:cache/2
KAZOO-2638 acdc use of whapps_call:cache/2
Formatting and tickies
Merge pull request #393 from 2600hz/KAZOO-2638

Kazoo 2638 - fixes for whapps_call:cache