Documentation, code clean ups and build updates Change-Id: I7ce3d75345b76f2a7693b6143e013b6a8202e093
Changes: * Bug 66064: Remove deprecated event.attrName and use event.originalEvent.attrName instead. * Added Ludic (lud) transliteration layout. * Added Tibetian (bo) EWTS layout. Change-Id: Ia171faa1cbd71e31d45408d96f23f0826b914c5e