refactor(Ext JS 5): DO NOT MERGE

stores
 - [ ] stores list
 - [ ] records
 - [ ] record details
     - [ ] records (tree)
     - [ ] records details

+ some refactoring
refactor(i18n): localization mixin
refactor(Ext JS 5): DO NOT MERGE

stores
- [x] stores list
- [x] records
- [ ] records (tree)
- [x] records details