user PreserveOrder in UserQueries and UserCharts
ChartUtils.toTree and TreeMap
fix re-used data in chartings
fix remembered parameters
BoxMap -> TreeMap, Doughnut -> Pie
TreeMap default padding 4
ParallelCordiantes mandatory 1st and 2nd dimension
fixes fast switch
Merge branch 'master' of https://github.com/signumsoftware/extensions