update seqcluster loses amcharts

       ./.travis.yml:- conda install --yes -c conda-forge -c bioconda memory_profiler openjdk pysam pybedtools pandas numpy biopython progressbar2 pyyaml bedtools samtools mirtop viennarna -q

      so, for some successful testing it seems like we need viennarna, still. That is not yet in the distribution. If truly dependending on it then bcbio ends up in contrib.

     seqcluster redistributes a "Free as in beer" graph library in its source tree at ./misc/js/amcharts.js that upstream accepts to be substituted with references to the online location in a CDN.  Steffen will address that. Downside of it all: seqcluster needs to go to contrib.

     seqcluster accepted a patch to eliminate a "Free as in beer" graph library from its source tree at ./misc/js/amcharts.js. These are now references to the online location in a CDN.

     Additional requirements:

      python3-dateutils (not yet packaged)

  http://chmille4.github.io/Scribl/

    A surprisingly neat JavaScript library to show genomic features

       Needed for seqcluster

    Steffen addresses packaging this JS library from 2012

package gjh_asl_json

  https://github.com/ghackebeil/gjh_asl_json