ignore distribute dir
python lint
groom power_wrapper flags
generalize power_wrapper to different networks and inputs

generalize from the imagenet reference to other detection networks:
- refactor to configure for a given net and data source
- determine dimensions of net input and output automatically from blobs
note power_wrapper TODOs
remove references to imagenet
fix: NET is global
groom power_wrapper flags
remove pointless todo
promote power_wrapper to 'detection' submodule