transcode: free extradata from context structures
muxer_libav: fix memory leaks
WEBUI: Fix icon for current recording

Fix icon for current recording because was the same as recording tab.
update ignore file in windows
WebTV: Implement basic touchscreen-compatible navigation controls, inc. paging and scrolling channel list
WebTV: Add Home/End, PgUp/PgDn, Left/Right plus overall code cosmetics
WebTV: Code cosmetics
WebTV: Code cosmetics
WebTV: Correct next/prev (esp. final page); add on-screen controls
WebTV: Remove unused parameters to navup/navdown
WebTV: Correct remote sort (defaultL: by channel number)