Runnin an Arming scenario when some sensor is tripped

[xadhoom]

Right now if arming is done on a tripped detector, the arm operation is refused.
[error] Not all sensors are idle, cannot arm! is seen in the logs.

Find a better way to handle it or at least better report to the user.

[xadhoom]

this is already done within partition using custom http error 555, we need to apply same handling