config: Add languages from 20150430 deployment plan
- Akan (ak)
- Bambara (bm)
- Chichewa (ny)
- Ewe (ee)
- Fula (ff)
- Kikuyu (ki)
- Kirundi (rn)
- Kongo (kg)
- Luganda (lg)
- Oromo (om)
- Sango (sg)
- Sesotho (st)
- Swati (ss)
- Tigrinya (ti)
- Tsonga (ts)
- Tswana (tn)
- Tumbuka (tum)
- Twi (tw)
- Venda * (ve)
Bug: T97540
Change-Id: I4ba0b2466dd5ddbf031c6707043351920f8e0fe0