fixed settings file read error

mobile/app/src/main/java/com/odweta/solon/Launch.kt

@@ -61,7 +61,8 @@ fun fetchNewData(ctx: Context, coscope: CoroutineScope) {
         val role = if (Parsing.userIsParent()) {
             " – Rodič"
         } else {
-            " – Student"
+            //TODO: remove
+            " – Student #############################################"
         }
 
         // display the full name of the user in the toolbar
@@ -166,7 +167,9 @@ private suspend fun launchPhase1(ctx: Context) {
             marks = Parsing.parseMarksJSON(marksJSON)
 
             // set the settings
+            if (Util.fileExists(settingsDataFilePath) && !Util.fileIsEmpty(settingsDataFilePath)) {
                 settingsData = Util.stringToSettingsData(Util.fileToString(settingsDataFilePath))
+            } // else load the default settigns
 
             // continue to launch phase 2
             done = true