Several UI/UX improvements.

services/webapp/code/rosetta/core_app/computing_managers.py

...rosetta/core_app/management/commands/core_app_populate.py

services/webapp/code/rosetta/core_app/models.py

...pp/code/rosetta/core_app/static/css/stylish-portfolio.css

...s/webapp/code/rosetta/core_app/static/img/docker-logo.svg

...app/code/rosetta/core_app/static/img/singularity-logo.svg

...code/rosetta/core_app/templates/components/computing.html

...code/rosetta/core_app/templates/components/container.html

...bapp/code/rosetta/core_app/templates/components/task.html

...es/webapp/code/rosetta/core_app/templates/computings.html

...es/webapp/code/rosetta/core_app/templates/containers.html

...s/webapp/code/rosetta/core_app/templates/create_task.html

...ices/webapp/code/rosetta/core_app/templates/task_log.html

services/webapp/code/rosetta/core_app/views.py