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()

Separated gga_load_data into a get_data part and a load part. Also handling the get_data part with specific paths and fixed some issues with the code (reworked functions and removing deprecated code).

jinja templating, more workflow changes, trying fixes for the jbrowse gmod tool using API (in progress)