'origin/286-gitlab-messages-wieder-in-austauschplattform-einblenden'
into development

Merge remote-tracking branch 'origin/286-gitlab-messages-wieder-in-austauschplattform-einblenden' into development

Remove hard-coded references to master branch

See merge request sharing/codeability-sharing-platform!113

Update translations for new difficulty values

See merge request sharing/codeability-sharing-platform!112

# Conflicts:
#   src/main/webapp/app/layouts/main/main.component.html

made logout dropdown look better

See merge request sharing/codeability-sharing-platform!104

changed checkbox back to not being autochecked and improved dropdown to actually close after being clicked on

Bugfix: Fix Sharing import/export with Artemis

See merge request sharing/codeability-sharing-platform!109

# Conflicts:
#	src/main/java/at/ac/uibk/gitsearch/service/ExerciseService.java