Revert "lib/model, gui: Allow creating and editing ignores of paused folders (fixes #3608)"

This reverts commit 25b314f5f1.

lib/model/rwfolder.go

@@ -96,16 +96,17 @@ type sendReceiveFolder struct {
 
 	errors    map[string]string // path -> error string
 	errorsMut sync.Mutex
+
+	initialScanCompleted chan (struct{}) // exposed for testing
 }
 
 func newSendReceiveFolder(model *Model, cfg config.FolderConfiguration, ver versioner.Versioner, mtimeFS *fs.MtimeFS) service {
 	f := &sendReceiveFolder{
 		folder: folder{
-			stateTracker:         newStateTracker(cfg.ID),
-			scan:                 newFolderScanner(cfg),
-			stop:                 make(chan struct{}),
-			model:                model,
-			initialScanCompleted: make(chan struct{}),
+			stateTracker: newStateTracker(cfg.ID),
+			scan:         newFolderScanner(cfg),
+			stop:         make(chan struct{}),
+			model:        model,
 		},
 		FolderConfiguration: cfg,
 
@@ -118,6 +119,8 @@ func newSendReceiveFolder(model *Model, cfg config.FolderConfiguration, ver vers
 		remoteIndex: make(chan struct{}, 1), // This needs to be 1-buffered so that we queue a notification if we're busy doing a pull when it comes.
 
 		errorsMut: sync.NewMutex(),
+
+		initialScanCompleted: make(chan struct{}),
 	}
 
 	f.configureCopiersAndPullers()
@@ -1060,7 +1063,7 @@ func (f *sendReceiveFolder) handleFile(file protocol.FileInfo, copyChan chan<- c
 				// sweep is complete. As we do retries, we'll queue the scan
 				// for this file up to ten times, but the last nine of those
 				// scans will be cheap...
-				go f.Scan([]string{file.Name})
+				go f.scan.Scan([]string{file.Name})
 				return
 			}
 		}