Dynamically generated class properties are not accessible in Command and System

[afsafzal]

The uid property of Command is dynamically set in __init__ function of the MetaClass. But when accessed it returns a property object:

In [1]: from houston.ardu.common import ArmDisarm
In [2]: ArmDisarm.uid
Out[2]: <property at 0x7f1354389868>

But when uid is set with a string it works with no problem:

> GoTo.uid
'ardu:copter:goto'

The same thing applies to property name of class System (even if it's set with an string):

In [6]: ArduCopter.name
Out[6]: <property at 0x7f13540e1d18>