* Introduce custom form widget templates to apply CSS classes
* Apply both mandatory and optional CSS classes to form widgets
* Omit required & placeholder attrs
* Move annotation of field validation failures to CSS
* Remove BootstrapMixin class
* Remove obsolete ComponentTemplateImportForm class
* Remove obsolete custom forms for login & password change
* Clean up obsolete accommodations for 'required' widget attr
* 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
* Added JobResult form filtersets
* Change housekeeping cleanup delete from `_raw_delete` to `delete` to make sure scheduled tasks are cancelled
* Change default sort of JobResult table to -created
* Added `delete` override to `JobResult` to remove scheduled tasks from RQ when a JobResult is deleted
* Updated js/css dist files. Will need to be redone when develop is merged to feature.
