render.js functionality

  - Load Instance setup
    * load current 'main profile' settings Properties Review:
        * affiliation trackers used
        * text warnings on string length restriction. 
        * currency
        * Cart related instance properties: enabling discounts, coupons, credit limits, email stubs. 
    * load configuration for instance = profile (currency, motifs, colors, etc)  problems - Some of those properties are used inside the front-end order customizing. They are not intended to be different INSIDE one instance.   Properties Review: 
        * project identifier, color selector usage.
        * motifs tabs usage.
        * rendering options
    * load localization data - messages.xml  
    * load Products set The system load products from all used schemas at this time. Different products should have different product names
    * load additional product options - colors, background colors, sizes used.
    * load coupons / discounts schemas if they are enabled
    * setup available payments data
  - Operations with labels
  - Order Processing. Each order product is associated with certain instance with 'instanceId_[x]' hidden fields