StoreFront search advanced features

The advanced features of the search include the following options:

1. Scrub incoming search terms using a reg exp filter to restrict what words are allowed.  The reg exp syntax follows the Java programming language.
2. Add stop words.  Encountering these words in the search algorithm will cause a stop in that search path.  
3. Add Synonyms.  These are used to replace one word with another to help search results.