UX improvement for actions on the Containers page

[stefanpejcic]

on the /containers page template under 'Actions' column in the table, we should display a dropdown like we do on /domains and in it we show those actions: stop/start edit terminal logs

[stefanpejcic]

we should also get rid of /containers/image/ route and all related code

[stefanpejcic]

and from the docker module separate to new modules code for:

• terminal
• change_image
• change_ws
• change_db

and rename the Docker menu item and dashboard sections from Docker to Containers

[stefanpejcic]

1 and 2 implemented in 2.0.1