Property Details page customizer:
- was missing the shortcode sub navigation menu
- page title change
Shortcodes preview:
- do not show the 'demo data' warning message
Shortcodes:
- fix for search form sometimes not appearing
- format the search form correctly when using shortcode templates
Custom Shortcode:
- allow user to create a custom shortcode without associating a template with it
make min_price and max_price text area rather then selects. 

Signed-off-by: Matt Barba <matt@placester.com>
Custom Shortcodes:
- regression fix for filtering not working
Custom Shortcode editor:
- fix for template links not working in some browsers
Allow filtering listings by agent id, office id in shortcodes
Merge branch 'staging' of github.com:Placester/builder into staging
search/static listing Shortcode and filtering support for limiting results to properties on same street
Rev'ing BP
Gutted and re-built dummy data prompting/activation on theme switch, both through the themes.php menu and the customizer, separating the case of onboarding...
Clean-up from last change