Handle new/unknown dir status better

* Show the raw directory status from the Syncthing API if
  it is an unknown (maybe newly introduced) status value.
* Note that the same does not apply to the device status
  because the device status is only deduced from other
  information.

connector/syncthingdir.cpp

@@ -93,6 +93,7 @@ bool SyncthingDir::assignStatus(const QString &statusStr, CppUtilities::DateTime
     if (!checkWhetherStatusUpdateRelevant(time)) {
         return false;
     }
+
     // identify statusStr
     SyncthingDirStatus newStatus;
     if (statusStr == QLatin1String("idle")) {
@@ -112,6 +113,9 @@ bool SyncthingDir::assignStatus(const QString &statusStr, CppUtilities::DateTime
     } else {
         newStatus = SyncthingDirStatus::Idle;
     }
+
+    rawStatus = statusStr;
+
     return finalizeStatusUpdate(newStatus, time);
 }
 
@@ -136,6 +140,8 @@ QString SyncthingDir::statusString() const
         return QCoreApplication::translate("SyncthingDir", "paused");
     } else if (isUnshared()) {
         return QCoreApplication::translate("SyncthingDir", "unshared");
+    } else if (status == SyncthingDirStatus::Unknown && !rawStatus.isEmpty()) {
+        return QString(rawStatus);
     } else {
         return ::Data::statusString(status);
     }

connector/syncthingdir.h

@@ -171,6 +171,7 @@ struct LIB_SYNCTHING_CONNECTOR_EXPORT SyncthingDir {
     int blocksAlreadyDownloaded = 0;
     int blocksToBeDownloaded = 0;
     QString downloadLabel;
+    QString rawStatus;
     unsigned int downloadPercentage = 0;
     bool ignorePermissions = false;
     bool ignoreDelete = false;
@@ -214,7 +215,11 @@ inline bool SyncthingDir::isUnshared() const
 
 inline bool SyncthingDir::assignStatus(SyncthingDirStatus newStatus, CppUtilities::DateTime time)
 {
-    return checkWhetherStatusUpdateRelevant(time) && finalizeStatusUpdate(newStatus, time);
+    if (!checkWhetherStatusUpdateRelevant(time)) {
+        return false;
+    }
+    rawStatus.clear();
+    return finalizeStatusUpdate(newStatus, time);
 }
 
 struct LIB_SYNCTHING_CONNECTOR_EXPORT SyncthingOverallDirStatistics {

model/syncthingdirectorymodel.cpp

@@ -455,7 +455,7 @@ QString SyncthingDirectoryModel::dirStatusString(const SyncthingDir &dir)
     }
     switch (dir.status) {
     case SyncthingDirStatus::Unknown:
-        return tr("Unknown status");
+        return dir.rawStatus.isEmpty() ? tr("Unknown status") : QString(dir.rawStatus);
     case SyncthingDirStatus::Idle:
         return tr("Idle");
     case SyncthingDirStatus::Scanning: