Background
Rule Validation ensures that Business Rules are implemented correctly by XSLT templates.
See also: qbo.BusinessRule: Enforcing Custom Rules
More to come...
Specification
Business Rules based on the RuleValidator (XSLT validation)
can create an Import File Template
can handle uploading a spreadsheet
can create an ImportFile record
the spreadsheet should be readable from the database
can watch remote file locations and import files found
should delete the inserted template