Set max length changes sent to nabu in irkalla

[assadriaz]

irkalla/src/main/java/org/rutebanken/irkalla/domain/CrudEvent.java

Line 135 in 1fb8dc4

event.newValue = newValue;

max char: 255

Max limit in naba database is 255, if new_value is greater than that, nabu is unable to save notification.

notifcation table nabu

new_value         | character varying(255)      |           |          |