Changes which allow images to be resized by Mir and saved in the filesystem if an...

Changes which allow images to be resized by Mir and saved in the filesystem if an image upload exceeds a certain size (defined in config.properties).

In order to save the location of the original (unresized) image to the database, a field needs to be added to the "images" table:

original_file_path - varchar(255)

Image resizing should be considered highly experimental.  It is turned off by default.