Merge branch 'release/1.6.4' into 'develop'

.gitlab-ci.yml

...net/geant/nmaas/notifications/NotificationController.java

...va/net/geant/nmaas/notifications/NotificationManager.java

...ava/net/geant/nmaas/notifications/templates/MailType.java

.../java/net/geant/nmaas/portal/api/bulk/BulkController.java

...net/geant/nmaas/portal/api/domain/VlabAppListElement.java

.../geant/nmaas/portal/api/market/ApplicationController.java

...t/nmaas/portal/persistent/entity/BulkDeploymentState.java

...et/geant/nmaas/portal/service/BulkApplicationService.java

...al/service/impl/ApplicationStatePerDomainServiceImpl.java

...nmaas/portal/service/impl/BulkApplicationServiceImpl.java

src/main/resources/changelog.json

...bernetes/components/helm/HelmChartUpdateListenerTest.java

src/test/shell/data/form_types/vlab_request.json

src/test/shell/data/i18n/de.json

src/test/shell/data/i18n/en.json

src/test/shell/data/i18n/fr.json

src/test/shell/data/i18n/pl.json

src/test/shell/data/mails/vlabRequest.json

src/test/shell/init.bat