case 10127: DefaultSortPriority should be unique within a ObjectClass
Fixing IntegerRangeConstraint
case 10126: ObjectBrowser: display classes as inheritance tree
case 10124: Cannot add a class with a name that already exists in another module
Codegen for last commit, case 10124
Moving Error Reporter UI to a separate autofac service
Bugfix in MS-Screenshot tool
WindowViewModel: Adding a on close hook
case 9849: client should not report more than a few errors per five minutes

First improvement: Make ErrorReporter dialog a singleton, so that new errors (occurring while the user doesn't notice/ignores/types in the dialog) are appended to the existing dialog without disturbing the user.
Making MultipleException gendarme compatible