🔃 [EngCom] Public Pull Requests - 2.2-develop

Accepted Public Pull Requests:
 - magento/magento2#12945: Naming collision in Javascript ui registry (backend) to 2.2 (by @VladimirZaets)
 - magento/magento2#12902: Fix #12900: Braintree "Place Order" button is disabled after failed validation (by @joni-jones)
 - magento/magento2#12755: magento/magento2#12294: Bug: Adding Custom Attribute - The value of A… (by @virtual97)


Fixed GitHub Issues:
 - magento/magento2#12555: Naming collision in Javascript ui registry (backend) (reported by @EliasZ) has been fixed in magento/magento2#12945 by @VladimirZaets in 2.2-develop branch
   Related commits:
     1. 64a16891

 - magento/magento2#12900: Braintree "Place Order" button is disabled after failed validation (reported by @ifekaj) has been fixed in magento/magento2#12902 by @joni-jones in 2.2-develop branch
   Related commits:
     1. 0c5cb6ad

 - magento/magento2#12294: Bug: Adding Custom Attribute - The value of Admin scope can't be empty (reported by @webscot) has been fixed in magento/magento2#12755 by @virtual97 in 2.2-develop branch
   Related commits:
     1. 2ccb374a
     2. 288d0d47
     3. e78ea61c