Retrieve() method reweitten to use map() where possible
Merge branch 'master' of github.com:blindstore/blindstore

Conflicts:
	server/store.py
Removed PoolExecutor
Benchmarking print()'s (related to HTTP transfer bottleneck)
Add server status updates
Merge branch 'master' into demo2

Conflicts:
	server/main.py
Client code instrumented with demo logging
Merge branch 'demo2' into demo
Pointing client and server to the new logging server