increase hover dot size on rickshaw graphs, for visibility
update hover details on standard graphs to show only date and data.
make sure slider aligns with standard chart (with give for slider handles)
stacked graph: align legend with left-y-axis and slider
fix alignment of y-axis in stacked version, with lined swatch stubs sometimes making things render inaccurately
custom text-shadow css changes lost in precedence override. move to graph-specific file, require after library style -> works
add custom cubism style sheet for application to insure override prescidence
push title higher on horizon charts so that hover value when near left hand edge allows title and value to be readable
move refresh metric listing to near metric listing. change old refresh to just reload the page (refresh the metric data). Add tooltips to suit
persistent zooming for rickshaw sliders

using the [glasnt/rickshaw persisent_zoom] branch code, make the jquery range
slider store it's handle values in the window.location.hash. Pick up these
values, if available, on build.

For adding/removing metrics on the same graph, append the hash on click to the
sidebar urls. Do not append for changing graph type or duration, since
persistent zooms aren't logical there.

Allows adding/removing metrics to keep the same zoom. Allows url sharing of
pre-zoom.

Limitation: zoom is in seconds since epoch, so over time the zoom won't have
any effect. Could add functionality to check that values are in range.
set sidebar metrics to be inline blocks, with replacement text overflow.

This will not scale well.