Removal of 'Edit on Github' link for API pages of KQC documentation - Fixes #92

[f-martini]

ISSUE

The API documentation pages are automatically generated by sphinx. Despite not having a documentation "source" the same way hand-written documentation pages have, sphinx still renders a link to the associated non-existent repo page.
Such link has to be removed only for the API-related documentation pages.

SOLUTION

Added docs/_templates/breadcrumbs.html, as suggested in this post, in order to overwrite the custom sphinx theme.

Changes:
Whenever :github_url: hide metadata is added at the top of a .rst file, breadcrumbs are not rendered.
:github_url: hide has been added to the top of each template file responsible for the generation of the API docs.
A new line has been forced by adding {{"\n"}} to avoid the added static text interfering with header generation.

Fixes #92

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[qpavsmi]

Thank you for your pull request and welcome to our community.

We require contributors to sign our Contributor License Agreement (CLA), and it seems that the following contributors have not yet signed it: @f-martini.

In order for us to review and merge your code, please sign the CLA at meetiqm.com.

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You don't need to sign the CLA again, this warning should go away eventually

[qpavsmi]

Seems that your CLA form somehow didn't get through, could you resubmit again and respond to this comment after you do so? https://www.meetiqm.com/iqm-individual-contributor-license-agreement

[f-martini]

Seems that your CLA form somehow didn't get through, could you resubmit again and respond to this comment after you do so? https://www.meetiqm.com/iqm-individual-contributor-license-agreement

I've just resubmitted it, let me know if you have received it. (I got the confirmation message on IQM web page btw)

[qpavsmi]

@cla-bot check

[cla-bot]

The cla-bot has been summoned, and re-checked this pull request!

[qpavsmi]

Works well and a very concise implementation! I will proceed with merging this to our main branch! Thanks for your contribution!