Addition of prepare_annotation pipeline. Small changes in process_data pipeline.

docker/segemehl/0.2.0/Dockerfile

snakemake/prepare_annotation/Snakefile

snakemake/prepare_annotation/cluster.json

snakemake/prepare_annotation/config.yaml

snakemake/prepare_annotation/create_snakemake_flowchart.sh

snakemake/prepare_annotation/dag.png

snakemake/prepare_annotation/run_snakefile.sh

...are_annotation/scripts/find_longest_coding_transcripts.py

snakemake/process_data/Snakefile