Remove compatibility code for Sanitizer::validateEmail

Sanitizer::validateEmail was added in 1.18, mw.org says min version is
1.19+, so this compat code is no longer needed.

Change-Id: I1ba1a8bd645c7e1c6cabe14f5efebfb8128ebf19
Localisation updates from https://translatewiki.net.

Change-Id: I05d1fc4d8d0040377982542398b23f3d13e020fd
Fix '#' encoding issue in SMWExporter::findDataItemForExpElement
Update RELEASE-NOTES.md

[skip ci]
Fix for RDF export of Subobjects
Merge pull request #377 from nischayn22/subobject_export_fix

Fix for RDF export of Subobjects
Merge pull request #385 from SemanticMediaWiki/fix-exporter-encoding

Fix '#' encoding issue in SMWExporter::findDataItemForExpElement
Update RELEASE-NOTES.md

[skip ci]
    Update RELEASE-NOTES.md

    [skip ci]
Merge branch 'master' of ssh://wmfgerrit/mediawiki/extensions/SemanticMediaWiki
Merge pull request #390 from nischayn22/rel_notes

    Update RELEASE-NOTES.md
Add Query::setUnboundLimit

Query::setLimit uses GLOBAL state to determine additional requirements but
sometimes an unbound limit is expected.
Merge "Remove compatibility code for Sanitizer::validateEmail"
Merge pull request #386 from SemanticMediaWiki/query-limit

Add Query::setUnboundLimit
SPARQLStore / Add test to verify complete removal of a semantic data container

Tests that semantic data are completly removed including all used/unused
subobject references
Update QueryTest.php
Merge pull request #389 from SemanticMediaWiki/sparql-sobj-query

SPARQLStore / Add test to verify complete removal of a semantic data container
Update RELEASE-NOTES.md

[skip ci]
Update RecordDataTypeRegressionTest.php
Update QueryResultLookupWithoutBaseStoreIntegrationTest.php

[skip ci]