Config, Lots of docs, Format

Added a config validator and documented code that was previously
undocumented, for the plot_generator scripts, documented them.

config.ini

@@ -1,5 +1,5 @@
 [Connection]
-override_port = None
+port_override = None
 baudrate = 19200
 # List the names as which the adapter cable will show up separated by commas below
 # For ENATECH, the below is likely correct.
@@ -16,6 +16,7 @@ accent_color = Lime
 [Dev]
 verbose = False
 use_test_library = False
+# One time out of how many (plus one) it should fail
 fail_sim = 10
 
 [Tariffs]