Added SmoothCircleBaseIC and modified all SmoothCircleICs for #3503
Updated test input files to newer syntax for #3503
Changed calculation of max distance in domain to use the range #3503
Deleted whitespace #3503
Merge pull request #3518 from tonkmr/feature_3503

Cleaned up SmoothCircleIC's by creating SmoothCircleBaseIC
Merge commit '86a4ece36d91597fba4f7e2543f1f49c80daf6db'