Delete CalcCaches that are not recently used

CalcCache contain files that can always be recalculated. Therefore CalcCache folder (and subfolders) may be deleted without losing relevant data or information.

The only disadvantage of deleting a CalcCache is that it will take more time to recalculate requested results.

Each project, version and environment makes it's own CalcCache. It is advised to check regularly if projects for versions/environments are still in use and if not, delete the entire CalcCache.

Deleting selections of files from the CalcCache is not adviced. This might corrupt your CalcCache.