Merge pull request #646 from magento-south/BUGS

[South] Bugs:
- MAGETWO-56072 [Performance] Image resize mechanism does not generate images of all necessary sizes
- MAGETWO-59904 [PR][Github] Update AccountLock.php #6952
- MAGETWO-53550 [Github][PR] Fix newsletter queue subscribers adding performance #4088
- MAGETWO-60047 [Porting] Error on adding address during checkout if add custom customer address attribute of file type - 2.2
- MAGETWO-56396 "Go Today" button in filter type date doesn`t apply value
- MAGETWO-59365 Countries list is not loaded if change customer website after country was selected
- MAGETWO-59924 File attribute doesn't have placeholder in admin