Merge pull request #3757 from owncloud/icon-cleanup

apps/files_trashbin/js/trash.js

apps/files_trashbin/templates/index.php

core/css/styles.css

core/img/actions/add.png

core/img/actions/add.svg

core/img/actions/delete-hover.png

core/img/actions/delete-hover.svg

core/img/actions/delete.png

core/img/actions/delete.svg

core/img/actions/lock.png

core/img/actions/mail.png

core/img/actions/mail.svg

core/img/actions/undelete.png

core/img/loader.gif

core/img/loading-dark.gif

core/img/loading.gif

core/img/remoteStorage-big.png

core/img/weather-clear.png