Manager access rights for Shop-Script

- Find and fix mistake in new version of Webasyst, inside of product the button go to new version of Webasyst 2.0, this button has shown for Managers
- Add new functionality, protect from new type of view product and categories for Managers, if manager will copy link into browser with new type of view Webasyst 2.0, the back redirect made for this case and back to traditional view of Webasyst products and categories
- Have added new functionlity, show/hide Purchase prices inside of Product, if Manager has opportunity manage products, you could hide Purchase prices for Manager
- Improve code

- Add new functionality that could help to hide for Managers access to products and orders in search string in admin panel
- For version of Webasyst Shop-Script 9.1 has added hook backend_autocomplete that helps managing by live search in autocomplete block
- Through the live search filtering products that manager do not have access
- Add functionality in search string using by enter in search string, also manager could see only available products, for this functionality has added option disabled "Live search"
- Add functionality disable search string for Managers at all, if version of Webasyst Shop-Script below than 9.1 or just have ability to hide this search string for Manager in backend
- For Managers have closed new editor in admin panel
- Small fixes
- Improved code

- The first version of plugin 'Manager Access Rights'

First version released.