reorder files
update some gems
add basic support for playing back amqp messages
add basic mechanism to checkout agents during replays
add empty app directory
rewrite agent/customer extensions too
allow for multiple calls
rewrite menu choice for calls
small cleanups
block while waiting for agent checkout
use frozen agent/admin names for interpolation
add some comments
decrease new call delay
avoid double-checkouts
set lang/skill according to current agent
update some gems
Merge branch 'release/0.1.11'