Add option to provide configuration yaml url

[thoka]

Consider to provide configuration of the calendar by an URL, pointing to some publicly available yaml or json file.

Benefits:

• nice support for big calendars
• add features like templates / color coding of events
• config file could be group editable beeing served from a github repository

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[niccokunzmann]

Yes, this is there. It needs to be documented. It is a JSON file. the URL parameter is specification.

[niccokunzmann]

@thoka #6 is closed now. Would you vote for YML? You can have a look, create new issues and close this one if appropriate.

[thoka]

Hm. The main benefit of yaml are comments inside code and better readability.

Are there any drawbacks ?

[niccokunzmann]

Are there any drawbacks ?

Hm. No.

We can use yml with safe_load. Would you agree to the following?

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We can close the issue if

• it is possible to load the calendar specification as yml, too
• it is documented that we can load the specification as yml
• we can choose the yml format for specification on the index page or there is an issue for this
• should there be an example yml file which includes comments and can be used as documentation?

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[niccokunzmann]

@thoka I pushed some functionality. Do you think this issue can be closed? What do you think should be done to close this issue?

[niccokunzmann]

I do not want to further this. We can re-open or make new issues for yaml.