Add region field into school

[Ghislain Hachey]

now with a bit of tweaking, you can display the stratum in the School page tied to the island, as we did for District.

You would need to:

1. include the field iOuter in the lookup SQl for islands - alias it as R (for region)

2. add a lookup sql for region

3. include "regions" in the core lookup array

4. add a vocab item to sysVocab "Region" => "Stratum"

chain the lookups to display the stratum name (I guess 'Stratum 4' etc) as for district name

[Ghislain Hachey]

Needed in FSM and RMI.

[Ghislain Hachey]

feat(School): expose region field

Resolves #108

→ <<cset 023a270f0a45>>