removed backup gspecies template file, precisions for required/optional parameters in config_example.yml

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).

run_workflow changes (functional again), some optimisation in gga_init, gga_load and run_workflow, more validation steps in gga_init

more config options (host, passwords, tripal themes), adapted methods to handle several histories in the same instance

Modifications for multiple histories in the same gaalxy instance, some changes for swarm architecture

Deploy stacks and load data both working, only phaeoexplorer workflow script to finish. Data loading done directly from the script (not calling the container script anymore). Also some polishing.

Swarm functional version (wait for galaxy service to finish scanning /export before running the data loading + workflow script)