* Clean up base modules
* Clean up forms modules
* Clean up templatetags modules
* Replace custom simplify_decimal filter with floatformat
* Misc cleanup
* Merge ReturnURLForm into ConfirmationForm
* Clean up import statements for utilities.forms
* Fix field class references in docs
* Add interval to JobResult
* Accept a recurrence interval when executing scripts & reports
* Cleaned up jobs list display
* Schedule next job only if a reference start time can be determined
* Improve validation for scheduled jobs