Merge pull request #7687 from Srokap/1.10

Merge branch '1.9' into 1.10
chore(i18n): update translations
chore(release): v1.10.0-rc.1
Merge pull request #7692 from beck24/release-1.10.0-rc.1

Release 1.10.0 rc.1
fix(settings): It's again possible to set user specific setting for a plugin

Fixes the method name from setUserSettings() to setUserSetting() and adds an
incomplete unit test.
Merge pull request #7702 from juho-jaakkola/plugins_service_user_setting

fix(settings): It's again possible to set user specific setting for a plugin