Also deletes earlier updatedatabase addition of lengthunit to avoid errors for people upgrading from stable (thanks Katrin for the idea)
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Checked creating a database from scratch and updating a database
with missing lengthunit column. Both worked without any problem.
If you update and have the column updatedatabase will report an error,
but the database will be ok.
0df4c6a3ac