[openFATE 312152] Add option to block requests to a certain project or package

Feature changed by: Adrian Schröter (adrianSuSE) Feature #312152, revision 2 Title: Add option to block requests to a certain project or package - Buildservice: New + Buildservice: Done Milestone: 2.3 Priority Requester: Mandatory + Projectmanager: Important Requested by: Adrian Schröter (adriansuse) Project Manager: (Novell) Engineering Manager: (Novell) Developer: (Novell) Partner organization: openSUSE.org Description: Add an option which allows to block new requests for a given project or package. This can be done by setting an attribute called "OBS:RejectRequests", the value is shown to the user. -- openSUSE Feature: https://features.opensuse.org/312152