aweSOM 1.1

Fixed bugs:
  In reproducible script, when data was unscaled it was not in matrix form.
  In the plot panel, the scales option was not available for CatBarplot.
  Variables weights are no longer standardized to sum to 1.
  Boxplot on prototype values is now drawn for the prototype values.

Improvements:
  Added support for categorical variables, and NA values.
  In the plot panel, variables selection changes only when necessary.
  New functions: cdt for complete disjunctive tables, and aweSOMreorder to reorder variables for pretty display.
  Option to hide observations names in the plots.

Misc:
  Added hex-sticker logo.
  Improved appearance of the shiny UI.
  More detailed help messages in UI.
