[merge] from 0.3.2
[evol] quick code to handle running an external script to reload the zone (needed for signed zones)
[evol] work on cyborg server protocol and API #7 (refs #31)
[evol] uncomplete MapMaker bot implementation (global cyborg classes, use of EventMachine with UNIX socket backend, configuration adjustments, ...) (refs #31)
[evol] configuration defaults and schema checking (closes 21)