Insteon_Irrigation: Rename Poll_Valve_status to Request_Status

It is really what the user would expect to recevie for a request_status

Sadly, while the device will tell us if a program is running, it doesn't appear that it will tell us WHICH program is running
Insteon_Irrigation: Fix Documentation
Insteon_Irrigation: Add Support for Get Timers Request

Partial support was there, but not really enabled.
Merge branch 'insteon_irrigation' into running
Insteon_Irrigation: Add Pump and Status Message Features
Merge branch 'insteon_irrigation' into running
Insteon_Irrigation: Remove Status Broadcast Code, Insteon PLM Does not Support

Every now and then I am reminded what an AWFUL protocol Insteon is.  This is one of them.

The EZFlora can be set to send out broadcast messages, however the PLM will not decode them.  As a result, MisterHouse never sees them, and they are useless.

According to the manual the PLM could be put into monitor mode allowing it to see these messages, however Insteon disabled that feature on the PLM.

It is beyond stupid, that the PLM will not display a broadcast message sent from a device in its own link table.  There is no security concern here.
Insteon_Irrigation: Enable Setting of Valve Timers
Merge branch 'insteon_irrigation' into running