Add a project query filter for "Subproject of"/"Parent project" with operator "contains"
Current "Subproject of" filter implementation allows to chose only "is" operator what does not allow to show entire project hierarchy. This is important for multi-project approach.
Please add "contains".
Environment: Redmine version 4.1.0.stable Ruby version 2.5.7-p206 (2019-10-01) [x64-mingw32] Rails version 220.127.116.11 Environment production Database adapter Mysql2 Mailer queue ActiveJob::QueueAdapters::AsyncAdapter Mailer delivery smtp SCM: Subversion 1.11.1 Git 2.19.1 Filesystem Redmine plugins: no plugin installed