Fixed and improved path handling

Calendar/ImageFileAdapter.py

@@ -1,10 +1,13 @@
 from DisplayAdapter import DisplayAdapter
+from Assets import path
 
 class ImageFileAdapter (DisplayAdapter):
     """Saves design to an image file, can be used for debugging"""
     def __init__ (self, file_path = ""):
         super(ImageFileAdapter, self).__init__(384, 640)
         self.file_path = file_path
+        if self.file_path == "":
+            self.file_path = path
 
     def render (self, design):
         design.get_image().save(self.file_path + 'design_exported.png')