Commits for braney

v289_base to v290_preview (2013-09-09 to 2013-09-16) v290

• first pass at making dup bars in snakes into rainhows
  • src/hg/hgTracks/snakeTrack.c - lines changed 11, context: html, text, full: html, text
• thicken up the duplication bars in snake tracks
  • src/hg/hgTracks/snakeTrack.c - lines changed 2, context: html, text, full: html, text
• use a different palette for duplication bars in snakes
  • src/hg/hgTracks/snakeTrack.c - lines changed 20, context: html, text, full: html, text