Fix "/" char

[JavierRefuerzo]

User Report from ISY Form
https://forum.universal-devices.com/topic/35315-opensprinkler-works-great-thanks/

Other thing is I named one of my stations "Front Lawn/Side Lawn" and ISY does not show this station with the "/" slash character. I think I have seen this before in other node servers but I would suggest to replace the / with whitespace or some other character depending on what the actual reason is. I fixed by renaming the station in open sprinkler without the / and then I had to remove/add the poly for ISY to see.