Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

gaia/build/config/tv/apps-engineering.list

@@ -0,0 +1,22 @@
+tv_apps/smart-system
+tv_apps/smart-settings
+tv_apps/smart-home
+tv_apps/browser
+tv_apps/tv-deck
+tv_apps/tv-epg
+tv_apps/app-deck
+tv_apps/device-deck
+tv_apps/dashboard
+tv_apps/dlna-player
+tv_apps/fling-player
+tv_apps/notification-receiver
+tv_apps/weather-widget
+tv_apps/remote-control
+tv_apps/remote-control-client
+tv_apps/fling-tutorial
+tv_apps/tv-ftu
+apps/sync
+apps/keyboard
+outoftree_apps/*
+dev_apps/test-agent
+dev_apps/uitest