Changes for 0.5.6.0
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* The forestplot2 is updated - the widths are now relative to the window size, there is a margin option, and many of the inside functions have moved to helpers outside. Also fixed the alignment of the summary label to work better.
* Fixed a minor bug for cgroup without rowlabels
* Added default_ref for both getDescriptionStatsBy and describeProp function.
* The percentage sign in getDescriptionStatsBy, describProp and describeFactors is now optional.
* A minor bug fix for cgroup.just for the htmlTable function