indicator config should live in couchdoc and not in localsettings

The couch doc will have the following ID: `INDICATOR_CONFIGURATION`

It will look something like:
```javascript
{
   "_id": "INDICATOR_CONFIGURATION",
   "_rev": "5-e93a589dbb1f4cc80125f786663c8764",
   "enabled_domains": [
       "mvp-potou",
       "mvp-sauri",
       "mvp-bonsaaso",
       "mvp-ruhiira",
       "mvp-mwandama",
       "mvp-sada"
   ],
   "namespaces": {
       "mvp-potou": [
           [
               "mvp_indicators",
               "MVP"
           ],
           [
               "test_indicators",
               "TEST"
           ]
       ],
       "mvp-sauri": [
           [
               "mvp_indicators",
               "MVP"
           ]
       ],
       "mvp-bonsaaso": [
           [
               "mvp_indicators",
               "MVP"
           ]
       ],
       "mvp-ruhiira": [
           [
               "mvp_indicators",
               "MVP"
           ]
       ],
       "mvp-mwandama": [
           [
               "mvp_indicators",
               "MVP"
           ]
       ],
       "mvp-sada": [
           [
               "mvp_indicators",
               "MVP"
           ]
       ]
   }
}
```