Merge remote-tracking branch 'origin/master'
Merge pull request #650 from scnakandala/refac_tbl_relation.php

Refactoring tbl_relation.php
Fix typos
Resolve merge conflict
bug #3993 Sorting in database overview with statistics doesn't work
Fix merge conflicts
Another foreign key definition for information_schema
Translated using Weblate (Simplified Chinese)

Currently translated at 95.1% (2586 of 2720)
Merge remote-tracking branch 'origin/master'
Tests for server settings tab
refactor server_privileges
fix UT according the source file changes
added methods PMA_handleUpdatesForInternalRelations, PMA_getQueryForInternalRelationUpdate
added method PMA_handleUpdatesForForeignKeys
add test for PMA_tbl_relation and PMA_tbl_tracking
Merge pull request #651 from ayushchd/selenium

Selenium
Merge pull request #652 from xmujay/refactor_server_privilegess

Refactor server privileges
Translated using Weblate (Simplified Chinese)

Currently translated at 95.1% (2586 of 2720)
Merge remote-tracking branch 'origin/master'
XHTML compliance