HTTP Server in IDE - no device connection behavior

[Turgut Guneysu]

Observations:

• When no device is connected to the PC:

‌ it will execute getVar for existing variables and return their default values

BUT:

‌ it will execute getVar for non-existing variables and return 0

‌ it will execute setVar for existing and non-existing variables and return values set

‌

• When device is connected to the PC but USB icon is not green:

‌ it will first connect the device and turn USB green

‌ it will do the right thing for the existing variables

BUT:

‌ it will execute getVar for non-existing variables and return 0

‌ it will execute setVar for non-existing variables and return the set value

‌

[John Maloney]

Fixed in next pilot. Now returns 'Board not connected' if board is not connected.