Mod should not alter stock fairings

[alexandruast]

After installing ProceduralFairings, ships created with stock fairings do not work properly - they need procedural fairings to be attached. Also, stock fairings are renamed, for example AE-FF1 becomes AE-FF-PF.
Being a parts pack, the expectation is that it does not alter existing parts, so that ships created without the mod do work properly and in a predictable manner.