Localisation updates from https://translatewiki.net.

Change-Id: I7f751d0663796155c62e170b5e9ed840cb83c469
excel format: support for date/time values

Change-Id: I14399921ae7d107a3d8f814c050dc2728d066a9a
Localisation updates from https://translatewiki.net.

Change-Id: I87ef2da71cfce566a184df14880e5347d73f6411
Merge branch 'master' of ssh://wmfgerrit/mediawiki/extensions/SemanticResultFormats