Rename rope to straw rope

[squimbo]

Lots of popular mods add their own ropes, but all work slightly differently. I think farmer's delight's rope is unique enough visually and mechanically that it should have a unique name to differentiate it from others.
I often play with farmer's delight and supplementaries, which both add their own ropes. Usually in this kind of situation I would disable one mod's rope in config, but both have their own uses and visual styles. Sharing an item name feels weird though, especially when using JEI/REI