Lots of Improvements

Here are the main changes I made.

= 1.1.5 =
* Added basic schema support to Single Listings Template
* Added support for Jetpack publicize and markdown editors
* Added Jetpack shortcode links in messages about shortcodes when editing a property
* Added DNS Prefetch Support for scripts used on Single Listings Template

= 1.1.4 =
* Minified CSS, Setup SCSS for better site performance
* Updates to script calls to improve site performance
* Updated jQuery Validate to 1.13.1