Caching mechanism broke the correctness of network update

[Vladimir Kravets]

Byobu uses caching mechanism to using .new files and if it's exists and file size not zero we get data from cached. Code for this is locate in the /usr/bin/byobu-status, function get_status(). The network script return nothing if we have traffic less than NETWORK_BANDWITH. In this case file size will be 0 and we will have incorrect(old) values of network traffic in the byobu status.

Need to have non-zero file size if we don't have any data or change caching mechanism (I think first will be less painful =) )

[Vladimir Kravets (vova-kravets)]

Patch add space to the output if there no traffic

[Dustin Kirkland  (kirkland)]

Fixed in r1967