Capitalizing Super User for consistency refs #4564

core/Access.php

core/Piwik.php

core/Plugin/Controller.php

core/Settings/SystemSetting.php

core/Tracker.php

core/Tracker/Cache.php

core/Updates/2.0.4-b5.php

core/Url.php

plugins/Installation/Controller.php

plugins/Installation/Installation.php

plugins/Live/Visitor.php

plugins/SitesManager/API.php

plugins/UsersManager/API.php

tests/PHPUnit/BaseFixture.php

tests/PHPUnit/FakeAccess.php

tests/PHPUnit/Integration/Plugins/LoginTest.php

tests/PHPUnit/Integration/Plugins/MobileMessagingTest.php

tests/PHPUnit/Integration/Plugins/SegmentEditorTest.php

tests/PHPUnit/Integration/Plugins/UsersManagerTest.php

tests/PHPUnit/Plugins/SEOTest.php