removed unused styles and added active-tmcov
removed unused styles and added active-tmcov

there were a bunch of unused styles from the hack. These have been
removed.

Additionally, a new style has been added to show the current time
frame that is plotted.

newhavenrc/nhrc2,newhavenrc/nhrc2,newhavenrc/nhrc2,newhavenrc/nhrc2,newhavenrc/nhrc2