combine with 1.8.7.7 which is not releases as auto-upgrade
#441 Average chart work with project with only 1 time step
#440 rename time variable in DID
#439 Make y-axis labels of weights histogram integers
#436 Drag&Drop doesn't work on Windows after auto-upgrade feature
#435 GeoDa crash: Averages tool
#434 libssl0.9.8 in ubuntu
#411 averages chart: interface formatting issue