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

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

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)