UPDATE: refactor repo into more official XBMC-Addon form

* Added GPL-3.0 license references & text (mirrors pithos libary license)
* Moved python library modules to resources/lib
* Updated __[VARS]__ in default.py
UPDATE: change to Frodo compatible xbmc.python version
UPDATE: some initial DRY changes and notes
FIX: repair song title regression from earlier overbroad variable renaming
UPDATE: variable name refactoring for addon basic info
FIX: repair regression due to using double underscore prefixes in variable names

* __VARs are name mangled by Python when used within classes
* URLref: [Python - Style Guide - Names to Avoid] http://www.python.org/dev/peps/pep-0008/#names-to-avoid @@ http://archive.is/fF6T5 @@ http://webcitation.org/6Mf5njTC1
FIX: repair regression in use of station_list.getLabel()
UPDATE: more unicode changes, with early 'utf-8' encoding of station info
UPDATE: some preliminary DRY changes
UPDATE: add reference information & thoughts on possible changes
UPDATE: add additional reference URLs
UPDATE: improve station selection UI & smooth some of the harder edges

* Removed lines around station names in station list
* Added non-focused selection visual hint to station list
* Smoothed station list selection highlights
* Slight smoothing of station list box image
UPDATE: improve comments for ID

* Added comments in preparation for moving all IDs into a common place within the addon (PENDING DRY improvement)
UPDATE: update NTSC XML to parity with 720p

* Updated NTSC XML from changes already included in 720p
* BUGFIX: this fixed script exceptions in NTSC mode because of missing buttons/IDs
UPDATE: minimize use of xbmc.Player( xbmc.PLAYER_CORE_MPLAYER ); add deprecation commentary

* xbmc.Player( xbmc.PLAYER_CORE_MPLAYER ) is deprecated [ see URLref: http://forum.xbmc.org/showthread.php?tid=173887&pid=1516662#pid1516662 ]
* using the CORE_MPLAYER is currently necessary to play .mp4 files (low/medium quality from Pandora)
* PENDING investigation about a bugfix for playing the stream or leaving the current API as is in Gotham [ see URLref: https://github.com/xbmc/xbmc/pull/1427 ]
UPDATE: regularize format of & disable some log messages
UPDATE: update xbmc references and ToDO list
UPDATE: use unicode decoding for OS paths derived from XML values
UPDATE: provider, addon.xml, CHANGELOG.txt, and README.txt updates

* Changed provider-name to RIVY
* Improved summary information, license information, and credits
* Removed redundant COPYING.txt file
UPDATE: improved icon; improved licensing disclosure language and add Moka attribution