[Important note - 2019-01-07] If your translations don't work anymore after updating Easy Booking to version 2.2.0, you need to rename your .mo/.po files as follow (replace "fr_FR" by your own language code):
Filters booking duration when calculating new price.
Args: (integer) $duration, (array) $booking_data, (integer) $_product_id
Overrides the default capability level to access the Easy Booking settings page (default to “manage_options”).
Args: (string) $capability