re-priorized roadmap

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- gauge-view: interval selection dropdown 

- fix pie widget

- use rack websocket instead of em websocket

- store per-session-data

- callback on session-flush

- split up fnordmetric.namespace block into multiple files

- report: print number of samples, interval-size on topright via scalaexp-buttonstyle

- overview view: gauge list (a'la github graphs landing)

- overview view: num active users, system stats (realtime widget)

- formatter: num, time, currency, percent, time_of_day

- minimize/pack js

- put images into one sprite

- nice empty states

- fix pie widget

- timeseries gauge: restrict to max resolution

- timeseries-gauge: overview series weights

- timeseries-gauge: overview all numbers

- timeseries-gauge: punchcards

- timeseries-gauge: trends

- timeseries-widget: tooltip -> show key noun   

- timeseries-widget: select sane default tick + tickbtn active states

- timeseries-widget: cardinal on/off should be skeuomorph

- distgauge: render std. deviation

- distgauge: render max/min/avg over time

- distgauge: display trends

- use rack websocket instead of em websocket

- caching

- overview view: gauge list (a'la github graphs landing)

- overview view: num active users, system stats (realtime widget)

- gauge garbage-collection

- split up fnordmetric.namespace block into multiple files

- fix html widget

- fix toplist widget

- fix specs

- incr_fraction: implement progressive

- timeseries-widget: cardinal on/off should be skeuomorph

- timeseries-widget: select sane default tick + tickbtn active states

- fix session view

- new readme

- new full_example.rb

- formatter: num, time, currency, percent, time_of_day

- favicon (F)

- minimize/pack js + css

- put images into one sprite

- nice empty states

        .number

          %span.desc Median

          %span.value.ui_value{:"data-value" => @values.median }

        .number

          %span.desc Trend

          %span.value

            .ui_trend{:"data-trend" => 1.0 }

        .number

          %span.desc Range

          %span.value.ui_value{:"data-value" => @values.range }