Add configuration setting for disabling counting stray folders

[Nicklas Nordborg]

The counter service includes a function for checking and counting if there are any stray folders in the project archive. Typically due to items that have been deleted from BASE. See #865.

The problem with this function is that in a development environment it usually takes too long time and uses a lot of cpu resources. Another issue is that the project archive is usually not accessible unless an explicit SSH session is opened (and then to a development location that is separate from the production location).

Until now a workaround has been to comment out parts of the code that is counting the stray folders. It would be nicer to have a configuration setting in reggie-config.xml to disable this.

[Nicklas Nordborg]

In 5554:

Fixes #1166: Add configuration setting for disabling counting stray folders