Remove unused imports. Factorize goto_species_dir(), create_galaxy_instance. Move constants at the beginning. Use upload_from_galaxy_fs() instead of upload_from_local(). Add get_bam_label()

Release 2.0

See merge request !8

Workflow v2

See merge request !5

# Conflicts:
#	gga_init.py
#	speciesData.py
#	templates/gspecies_compose.yml.j2
#	workflows_phaeoexplorer/Galaxy-Workflow-chado_load_tripal_synchronize_jbrowse_2org_v3.ga

Todo release 1.1

See merge request !6