This resolves #519.

The $store and $params variables were not initialized before trying to execute the prepared statement.

This resolves #519.

bugfix: When generating a NameID from a multivalued attribute, a warning was logged but the NameID was still generated.

$password and $crypted where swapped

For #458

No functional changes.

For: #458

`core:ScopeFromAttribute` is a generalised version of this.

Closes: #512

Add missing translations for “required” and “optional” strings when checking PHP extensions installed.

Note the tags 'spname' and spdescription' that cannot be namespaced because
their translations are loaded dynamically.

For #455 and #465

For: #458

For #454 and #465

For #455

"core" needs to be able to wrap some content in tabs

This module is hereby twigified. For #499.

When using ldap:LDAPMulti, SimpleSAMLphp generates an exception:

 SimpleSAML_Error_Exception: Error 8 - Undefined index: rememberMeEnabled
 Backtrace:
 4 /srv/simplesamlphp-1.14.8/www/_include.php:83 (SimpleSAML_error_handler)
 3 /srv/simplesamlphp-1.14.8/modules/core/templates/loginuserpass.php:107 (require)
 2 /srv/simplesamlphp-1.14.8/lib/SimpleSAML/XHTML/Template.php:577 (SimpleSAML_XHTML_Template::show)
 1 /srv/simplesamlphp-1.14.8/modules/core/www/loginuserpassorg.php:95 (require)
 0 /srv/simplesamlphp-1.14.8/www/module.php:137 (N/A)

This is because the loginuserpass.php template (which is used by both
loginuserpass.php and loginuserpassorg.php) refers to
$this->data['rememberMeEnabled'], but that variable is only defined when
you make use of loginuserpass.php.

Since these don't appear to be relevant to loginuserpassorg.php, this
patch simply sets these to false (the default value), so that they're
no longer undefined.

For #485

Don't start a <dl> when there's no content for it. Would result in "<dl></dl>".

One error left in: data-clipboard-target="#metadata"
JavaScript should probably be changed to check for id instead of a proprietary attribute.

Add mandatory cols-attribute for non-CSS compatible browsers.

We're one column short

- Attributes which can be get from LinkedIn are now configurable
- By default these attributes are requested: id,first-name,last-name,headline,summary,specialties,picture-url,email-address
- Added email-address attribute into the default set
- Fixed link to the documentation