Remove unused import, add get_queue_completed method

src/web.py

@@ -1,7 +1,6 @@
+import os
 from flask import flash
 from werkzeug.utils import secure_filename
-import time
-import os
 from task import TextTask, ImageTask, CutTask
 
 
@@ -99,11 +98,12 @@ class Web(object):
                     + str(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
                 )
                 return True
-            else:
-                self.app.logger.error(
-                    "Could not save file because the filename is forbidden"
-                )
-                return False
+
+            self.app.logger.error(
+                "Could not save file because the filename is forbidden"
+            )
+            return False
+
         else:
             self.app.logger.error(
                 "Could not save file, it seems to be null ? : " + str(filename)
@@ -113,3 +113,7 @@ class Web(object):
     def get_queue_state(self):
         """Return current queue state"""
         return self.print_queue.get_queue_state()
+
+    def get_queue_completed(self):
+        """Return completed queue elements"""
+        return self.print_queue.get_queue_completed()