Update default.py
Updated artwork and filename structure

Improved the artwork of LAS, Linux Unplugged, In Depth Look, and Torked.
Also improved the filename structure to be more consistent with the show
names.
icon and fanart update
Updated artwork for addon main icon with new color logo
Changed "Live Show" string to "JBLive.TV"
Added artwork for JBLive.tv and Most Recent episodes feed

I created custom artwork for both the JBLive.TV stream as well as the
Most Recent feed for all episodes. (also deleted the old JB logo image)
Made a slight tweak to improve the Most Recent image
Added update to changelog for "3.1.1"
Merge pull request #38 from MichaelTunnell/frodo

New artwork, new filename structure, and a few language updates