Update README.md

Typo
Fixed multiple selection for image and file fields

Signed-off-by: Elliot Condon <e@elliotcondon.com>
removed incorrect minified file

Signed-off-by: Elliot Condon <e@elliotcondon.com>
Updated italian

Signed-off-by: Elliot Condon <e@elliotcondon.com>
Prevents gallery field from loading sidebar if already active

Signed-off-by: Elliot Condon <e@elliotcondon.com>
improving upgrade notice

Signed-off-by: Elliot Condon <e@elliotcondon.com>
minor updates before rollback testing

Signed-off-by: Elliot Condon <e@elliotcondon.com>
Added rollback code

Signed-off-by: Elliot Condon <e@elliotcondon.com>
Removed testing variables from downgrade

Signed-off-by: Elliot Condon <e@elliotcondon.com>