SpecialNewImages: Use Config instead of globals

Change-Id: I713ebc5a45dd01e83d32cd68e52ffd557dc52aee
SpecialPageLanguage: Use Config instead of globals

Change-Id: Icd3b1a7f32eeae7a433920de93337b29a5c4e222
Merge "SpecialPageLanguage: Use Config instead of globals"
Merge "SpecialNewImages: Use Config instead of globals"