Test columns sport_title, course_title, and course_description added to courses_sports table.
Separate relevance for title and description added. The property relevanceMin of the CourseTable is not being used now. Instead of it the relevance is being calculated from relevanceMinTitle, relevanceDescription, and their weightages. It should be decided later, which approach is to use for long term: a. part min relevances (as now), that are caculated to a result min relevance; b. part relevances, that are used in SQL directly; c. result relevance as argument passed to the Table object in the Module class. CLOSE #48