* removing most mentions to "tpl"

core/Piwik.php

core/Version.php

core/View.php

core/ViewDataTable.php

core/ViewDataTable/Cloud.php

plugins/CoreHome/javascripts/broadcast.js

plugins/ExamplePlugin/Controller.php

plugins/MobileMessaging/ReportRenderer/Sms.php

plugins/Overlay/javascripts/Piwik_Overlay.js

plugins/SitesManager/javascripts/SitesManager.js

plugins/UserCountry/Controller.php

tests/PHPUnit/Core/ReleaseCheckListTest.php