cacheLocaleTerritories(mTerritories, sLocale) {
		this.mTerritoriesCache[sLocale] = {
			TW: mTerritories.TW,
			HK: mTerritories.HK,
			MO: mTerritories.MO
		};
	}
Caches relevant territories.

@param {Object<string,string>} mTerritories
  The territories map
@param {string} sLocale
  The locale