Implement Jazzband guidelines for django-cities-light

This issue tracks the implementation of the Jazzband guidelines for the project django-cities-light

It was initiated by @jpic who was automatically assigned in addition to the Jazzband roadies.

See the TODO list below for the generally required tasks, but feel free to update it in case the project requires it.

Feel free to ping a Jazzband roadie if you have any question.

TODOs

• Fix all links in the docs (and README file etc) from old to new repo
• Add the Jazzband badge to the README file
• Add the Jazzband contributing guideline to the CONTRIBUTING.md or CONTRIBUTING.rst file
• Check if continuous testing works (e.g. Travis CI, CircleCI, AppVeyor, etc)
• Check if test coverage services work (e.g. Coveralls, Codecov, etc)
• Add jazzband account to PyPI project as maintainer role (e.g. URL: https://pypi.org/manage/project/django-cities-light/collaboration/)
• Add jazzband-bot as maintainer to the Read the Docs project (e.g. URL: https://readthedocs.org/dashboard/django-cities-light/users/)
• Add incoming GitHub webhook integration to Read the Docs project (e.g. URL: https://readthedocs.org/dashboard/django-cities-light/integrations/)
• Fix project URL in GitHub project description
• Review project if other services are used and port them to Jazzband
• Decide who is project lead for the project (if at all)
• Set up CI for Jazzband project releases if needed and open ticket if yes

Project details

<caption></caption>

Description	A simple app providing three models: Country, Region and City model. Also provided, a command to insert or update data from geonames database dumps. Status: stable.
Homepage	http://django-cities-light.rtfd.org/
Stargazers	236
Open issues	38
Forks	103
Default branch	master
Is a fork	True
Has Wiki	True
Has Pages	False

[jezdez]

@marianoeramirez To fix https://github.com/jazzband-roadies/help/issues/199 we need to decide who will be project lead for this project, since they must review and confirm releases before they are pushed to PyPI. Project leads so far only do the release management, but certainly will be the go-to person if issue arise. More information about the release process is in the docs.

[jezdez]

Congrats!!