06d7629 backend, frontend: cancel also "starting" builds

4 files Authored by praiskup 3 years ago, Committed by praiskup 3 years ago,
    backend, frontend: cancel also "starting" builds
    
    There's no point to _not_ deliver a cancel request when the build is in
    "starting" state.  At least now.
    
    Also, from the backend perspective, try to check if there's the cancel
    request always before we start doing some expensive actions.
    
    Fixes: #1391