LIMS-1340: soft-cache validator results
LIMS-334: Remove duplicate getFormattedResult code
LIMS-334: Add Service/ExponentialFormatPrecision
LIMS-83: Update Method when Calculation changes

MethodCalculation and AnalysisServiceCalculation are automatically
updated when calculations update.
LIMS-1221: use folder icon for ARImports in nav

The icon for ARImport type has not changed - in client context it looks
better than the folder.