Revert "App with testpart"

This reverts commit 97934ecd73e5a87991358e177cedf199fd46044b.
Revert "Revert "App with testpart""

This reverts commit 5e15dbe4c813e224f6b751cc61a4e452723c944e.
Move ServerrRequest.remove() logig to UserManager (logig layer)
Test Pattern
Test Pattern
Merge commit 'f67815427a266f3b27e8a38568e11d33658b1738'