Default using project name from CI/DRONE, and default to directory project name as a last resort.
 fix that last point as it was using project_name_from_home instead of the variable of the same name

In the loop:
- Rename the "module" variable to "module_path".
- Set up a new "module" variable that contains nothing but the actual module
  name.

create_documentation: only create documentation for used modules, reusing the setup.cfg key defined for create_archive if it is present

correctly get branch name (.git/hg are in the module directory), and use default if no branch information available