Image Optimization, CSS & JS Minification

* Optimized Images (Used codekit)
* Setup Sass files, and minimized CSS for performance (Used codekit)
* Minimized JS for performance (Used codekit)
* The biggest item needing a look over are the php notices I fixed in "includes/srp-profile.php". I tested after the update, didn't see any issues with the fix, but I don't know the complete in/outs of this plugin yet.