[ECS] Added URL Parameter for Vendor Filters

Recently introduced Vendor Filters can now be pre-selected using the vendorCategory parameter.

Simply append the parameter and category to your multi-vendor ECS booking engine URL and the filter will be automatically applied upon page load—showing only applicable services of that type.

[ECS] New Dynamic Styling Options on Services Booking Engine

A flexible tool for those using custom CSS, these classes can be leveraged to apply visual changes to headers, categories, services and more when specific vendors have been selected.