Added buttons for changing view; Simplified graph
Added tooltip to links in RTTree
Update the welcome slide info
Roughly style the graph selectors
Invalidate the cache after 1 day
Fix the scrolling to unloaded graph. [HACK]

increase the priority of the scroll_to directive + use jquery to show
the slide-graph
Minor update of the graph slide
Fix the scrolling in firefox (animate both html,body)
Merge branch 'master' into gh-pages