Add fallback urls for cards without a muId set

We only have a good HQ source for them; any idea on a low-quality
source?
Merge pull request #421 from ctrlaltca/even_more_pictures

Add fallback urls for cards without a muId set
Default logging to enable with no config file

If no configuration file is found, default the logger to logging enabled.
Merge pull request #426 from woogerboy21/patch-2

Default logging to enable with no config file