Update git submodules
- Update extensions/CiteThisPage from branch 'REL1_42' to 4b7774411db628959ea52cfee4871097be940f87
- Localisation updates from https://translatewiki.net.
Change-Id: I7f5c18b97823a67cf323ee6fd3a6a928b90eb221
- Localisation updates from https://translatewiki.net.