[Feature, Plugin] lastfm_scrobbler_viewer

a plugin to view lastfm scrobbler logs

uses print cell to give a spreadsheet view of scrobbler logs

buffers the whole file if possible otherwise it reads entries from disk

rudimentary text searching for columns
include / exclude; all/any and case sensitive

Change-Id: Id9616e5796658952fba4ea747f596cb77d6f34c0

apps/plugins/SOURCES

@@ -13,6 +13,7 @@ jackpot.c
 keybox.c
 keyremap.c
 lastfm_scrobbler.c
+lastfm_scrobbler_viewer.c
 logo.c
 lrcplayer.c
 mosaique.c