timeout forecase and moonphase at one second

[josephkerkhof]

If there is a network disruption or downtime for the wttr.in service, the curl command should timeout. If the curl command does not have a timeout, it would prevent other dwmblocks from being updated while the sb-forecast or sb-moonphase hangs.

I chose the timeout to be 1 second to be consistent with other status bar scripts like sb-price and sb-iplocate. One second also makes sense because some dwmblock scripts update every second.

[appeasementPolitik]

Also look at this PR, I've solved this problem by doing the curl downloading in the background so the rest of the statusbar can run instantly. If there's no internet connection or curl fails, it checks and/or retries every 60 seconds:

#1296