DateFormatter -> <dateFormatter format="string" type="DATE/DATETIME" useUserTimezone="boolean"/>
2) Move <formatter/> element to the compatibility module;
3) Add <customFormatter bean="bean_name"/> element to provide declarative definition of the custom Formatter
Description of the bug or enhancement
Related to #499
1) Create elements for standard formatters defined in JMIX:
ClassNameFormatter-><classNameFormatter />CollectionFormatter-><collectionFormatter />NumberFormatter-><numberFormatter format="string"/>DateFormatter-><dateFormatter format="string" type="DATE/DATETIME" useUserTimezone="boolean"/>2) Move<formatter/>element to the compatibility module; 3) Add<customFormatter bean="bean_name"/>element to provide declarative definition of the customFormatter