support multiple paths in move DBox via new StoragePathNames() function, and pass that through to jinja

path.py

@@ -28,3 +28,9 @@ class Path(db.Model):
     def __repr__(self):
         return f"<id: {self.id}, path_prefix: {self.path_prefix}, num_files={self.num_files}, type={self.type}>"
 
+def StoragePathNames():
+    ret=[]
+    sps=Path.query.join(PathType).filter(PathType.name=='Storage').all()
+    for p in sps:
+        ret.append(p.path_prefix.replace('static/Storage/','') )
+    return ret