FP isolator (Does not allow using kip - ft units)

[samyogshr]

Please check line 54 of ComputeFPIsolatorElasticity.C

[somu15]

@samyogshr Thanks for pointing this out. Are you saying that line 54 should be "8 >= unit > 0"?

[cbolisetti]

Good catch. Can one of you create a PR for these? @samyogshr if you'd like to learn how to do it, @somu15 or @mriganabh can help. Thanks for pointing these out.