trying out textures for disagreement heat map
fix heat map legend not showing
Revert "fix heat map legend not showing"

This reverts commit 81e22b6482141a4d660780d3b63ceedf22344273.
Revert "trying out textures for disagreement heat map"

This reverts commit 45181a5417c1dcd0f5595a138ed28186e057d9f7.
Merge branch 'master' into dev_branch
refactoring (ChartData) to allow XML parsing
parse XML files; some bug fixing
fix some bugs in box plots
updating JAR file