* allow to load json marked as unsafe or vault
* centralized json code/decode, add vault support
* use generics to allow for more varied inputs
* allow inventory to dump vault w/o decrypting
* override simplejson also
* add entry for unsafe also
* load vaulted and unsafe json, support unvaulting if secrets provided
template/__init__.py imported unsafe_proxy from vars which caused
vars/__init__.py to load. vars/__init__.py needed template/__init__.py
which caused issues. Loading unsafe_proxy from another location fixes
that.
