cosigning matrix data
added cosigning data to party page
filter-able line graph coming up
filter-able line graph, transitions done
Changed cosigning figure to bar charts

 - Changed calculation to only output
   existing party combinations per RM
 - Made interactive bar chart with detail callback
 - Made horizontal bar chart
 - Made pageState for persisting simple state (integers)
   in the hash part of URL.
Cleaned up cosigning figs and data
upgrading covoting figure to modern standards...
cleaing up data handling a bit
smashed bugs, fixed choosing of parties in covoting fig
removed css-class-based behave tests (not working??)
typo