Conditions should be limited to diagnoses, findings, etc

When adding a new condition from the autocomplete text box, it should be limited to appropriate answers.  It's currently showing too many classes (ie. dates and other non-conditions).  It could be implemented with either of these variables:

• a global property indicates which concept classes can indicate diagnoses (since not everyone uses the same dictionaries). It could default to the way class names are listed in the CIEL dictionary.
• Define possible conditions with a global property  which specifies a concept  (class=convset; set members include possible conditions).  This would limit conditions to a small subset and not all concepts with class=diagnoses, et al.