Merge pull request #8936 from piwik/left_menu_2

CHANGELOG.md

config/global.ini.php

core/Menu/MenuAbstract.php

core/Period.php

core/Plugin/Controller.php

core/Updates/2.15.0-b16.php

core/Version.php

lang/en.json

plugins/API/templates/listAllAPI.twig

plugins/CoreAdminHome/CoreAdminHome.php

plugins/CoreAdminHome/Menu.php

plugins/CoreAdminHome/stylesheets/generalSettings.less

plugins/CoreAdminHome/stylesheets/menu.less

plugins/CoreAdminHome/templates/_menu.twig

plugins/CoreHome/CoreHome.php

plugins/CoreHome/Menu.php

...ngularjs/enrichedheadline/enrichedheadline.directive.less

...reHome/angularjs/menudropdown/menudropdown.directive.html

...reHome/angularjs/menudropdown/menudropdown.directive.less

...oreHome/angularjs/quick-access/quick-access.controller.js