Merge branch 'master' into codecoverage

.travis.yml

composer.json

composer.lock

console

core/Archive.php

core/Common.php

core/CronArchive.php

core/DataTable/Renderer.php

core/Db/Adapter.php

core/Factory.php

core/FrontController.php

core/Loader.php

core/Period.php

core/Plugin/Manager.php

core/ReportRenderer.php

core/Tracker.php

core/Tracker/GoalManager.php

index.php

js/tracker.php

lang/en.json