Add qformat parameter in call to executeAdvancedSearch() method.
Refactor code to get the relative paths of the resultset XSL and search results JSP from the MetacatHelper class rather than hard-coded.
Eliminate hard-coding of the knb context from the advanced search code. Advanced search servlet determines the metacat context name by reading the metacat.properties file at servlet initialization.
Bug #2207: Implementation of the Metacat Advanced Search engine.