Fix Zwave light naming & configurable refresh

[jbroadice]

Description:

Related issue (if applicable): fixes #4500
fixes #4499

Pull request in home-assistant.github.io with documentation (if applicable): #4476 and #4437

Example entry for configuration.yaml (if applicable):

Checklist:

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.github.io

If the code communicates with devices, web services, or third-party tools:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies are only imported inside functions that use them (example).
• New dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

If the code does not interact with devices:

• Local tests with tox run successfully. Your PR cannot be merged unless tests pass
• Tests have been added to verify that the new code works.

[turbokongen]

The colorights I completely forgot abot them again.
Also the instance naming 👌
🐬