Relax permissions on data directory
Relax permissions on data directory

This allows the docker user to write to it when you're developing
under Linux (and your local user generally owns the data directory).

Closes #260.

openaustralia/morph,openaustralia/morph,openaustralia/morph,otherchirps/morph,OpenAddressesUK/morph,openaustralia/morph,otherchirps/morph,openaustralia/morph,otherchirps/morph,OpenAddressesUK/morph,openaustralia/morph,otherchirps/morph,OpenAddressesUK/morph,otherchirps/morph,OpenAddressesUK/morph,otherchirps/morph,otherchirps/morph,openaustralia/morph