Merge pull request #657 from nextcloud/share-by-mail

.gitignore

apps/files/lib/Controller/ApiController.php

apps/files_sharing/lib/Controller/ShareAPIController.php

apps/files_sharing/lib/Controller/ShareesAPIController.php

apps/files_sharing/tests/ApiTest.php

...files_sharing/tests/Controller/ShareAPIControllerTest.php

...les_sharing/tests/Controller/ShareesAPIControllerTest.php

apps/sharebymail/appinfo/app.php

apps/sharebymail/appinfo/info.xml

apps/sharebymail/lib/Settings.php

apps/sharebymail/lib/ShareByMailProvider.php

apps/sharebymail/templates/altmail.php

apps/sharebymail/templates/mail.php

apps/sharebymail/tests/SettingsTest.php

apps/sharebymail/tests/ShareByMailProviderTest.php

build/integration/features/provisioning-v1.feature

core/js/shareconfigmodel.js

core/js/sharedialogshareelistview.js

core/js/sharedialogview.js

core/shipped.json