Dynamic filter configuration for search_listings and static_listings shortcodes
- filter options are picked from a drop list instead of being in one long form
Custom Shortcode admin page - filter settings:
- allow multiple values for cities, zip, county, state, property type
- do non exact match for values entered for text, textarea fields
- don't allow the user to add the same filter value more than once
- regression fix for featured_listings
Allow filters with value '0' eg Beds=Studio
Custom Shortcodes:
- code cleanup
Merge branch 'gsr' into staging
- Support for dynamic shortcode filter selector