The pombola.settings package is too complex

[chrismytton]

At the moment there is a fair bit of complexity in the pombola.settings package (in the pombola/settings/ directory).

$ ls pombola/settings/
__init__.py           nigeria.py            tests.py
apps.py               nigeria_base.py       tests_base.py
base.py               no_country.py         tests_kenya.py
kenya.py              south_africa.py       tests_nigeria.py
kenya_base.py         south_africa_base.py  tests_south_africa.py

Some of these files are quite large, base.py is 647 lines! Of settings!

$ wc -l pombola/settings/*
       0 pombola/settings/__init__.py
      16 pombola/settings/apps.py
     647 pombola/settings/base.py
      14 pombola/settings/kenya.py
     102 pombola/settings/kenya_base.py
      13 pombola/settings/nigeria.py
      25 pombola/settings/nigeria_base.py
      12 pombola/settings/no_country.py
      45 pombola/settings/south_africa.py
     135 pombola/settings/south_africa_base.py
      23 pombola/settings/tests.py
      39 pombola/settings/tests_base.py
      14 pombola/settings/tests_kenya.py
      14 pombola/settings/tests_nigeria.py
      30 pombola/settings/tests_south_africa.py
    1129 total

When we move to country specific repos, #2630, then we can hopefully eliminate lots of this complexity and just have a one base settings file and one test settings file per repo.