Fix id navigation and add quality-of-life configuration options

[asurcodes]

Hello, this PR is divided in 2 sections:

First of all I have fixed the id navigation on the endpoint body, the href reference wasn't generating the correct values and links on the URL field weren't working.

Second, I've added two configuration options:

• The ability to customize default headers. Very useful to speed up testing on different projects.
• The ability to hide development metadata. Key if the API docs are intended for public use, there's no need of showing folder structure nor class names.

I've kept the previous behaviour as default on the configuration files, but now they are overwritable.

[kevincobain2000]

Thanks, pushed to 1.29