If there is no "general" block defined in the expander, it just won't show.

This was inline in the script, and later migrated to a twig template. This made us force the use of twig, or otherwise the template would not work for the old user interface. We shouldn't do that, and we should have a proper PHP template in place.

Old PHP templates are going to disappear anyway, so let's not break anything for a change that will be removed in the near future. We keep the .tpl.php extension though.

It doesn't make much sense anyway. Makes the original templates harder to format, and browser developer tools can provide hierarchical indentation anyway. This allows us to save quite a few bytes per page, write cleaner templates, and forget about how it would look like in the resulting HTML.

This is no longer required in HTML 5.

Non-JS version still needs work. We need to review also non-iframe logout.

This allows us to get rid of inline styles.

Make it a bit better for those with javascript disabled, and add a CSP.

- Make textarea and code-box monospace (might be subjective)
- Jump to converted data after form submit
- Make file upload label work

Closes: #1094

The calling code of the template had been changed to accommodate
new twig templates, but slightly changed the content of the
template variables so preferredidp never matched the list of known
idp's. This fixes it in the least invasive way. Could be
refactored because we now loop the idplist twice, but since this
is legacy code that's likely not worth it.

Thanks Stefan Winter from RESTENA for reporting.

Also move the templates to the "saml" module, since they belong in there.

The old mail class uses the built-in `mail` function in PHP, and builds a payload by itself using hard-coded HTML and MIME-snippets. Let's use a library for that; PHPMailer has new dependencies and does all the heavy lifting.

re-add it and fix all templates that depended on it being unset

This is because of the positioning of the elements which triggers
a clipboard.js bug: zenorocha/clipboard.js#382
Removing the whitespace around the HTML tags works around this issue.

closes: #1041

ClipboardJS is initialised once in the bundle for class="copy",
not initialised on each page that uses it.

This includes the generation of metadata for all hosted entities, even if there's more than one entity defined for a certain type (e.g. multiple SPs or multiple IdPs).

Still missing:

* Metadata converter moved to the admin module.
* Metadata lookup.
* Showing metadata for trusted entities.
* Downloading certificates.
* Move the "clear my discovery choices" link to the new user interface.

Start migrating to SAML2 getters/setters

It was broken in previous commits. It should always stick to the bottom of the page, unless the page is long enough to not fit in the screen, so then it should just be thrown after the end of the content.

This way the code is closer to the resulting HTML, and we don't need to pass it through the "raw" filter afterwards to keep rendering the HTML.

This introduces a "theme.header" configuration option in order to achieve that.