details.php: Add a $content array

Issue #74.
details.php: Add $content.names property

Issue #74.
details.html: Render names from content array

Issue #74.
details.php: Add a $content.properties array

Issue #74.
details.php: Render table from properties

Issue #74.
details.html: Use primary panel for extern links

Issue #86.
details.html: Use btn-success for extern links

Issue #86.
details.php: Add a $content.links array

Issue #74.
details.html: Render external links from content array

Issue #74.
details.{php,html}: Pass navbar parameters to template

Issue #74.
_title.html: Pass download href as parameter

Issue #74.
details.{php,html}: Pass download href as parameter

Issue #74.
details.html: Use HTML header comment

Issue #74.
details.php: Add missing comment

Issue #74.
details.php: Add a $content.ref property

Issue #74.
details.html: Render reference section from template

Issue #74.
details.php: Less newlines
details.php: Add a $content.meta array

Issue #74.
details.html: Render details meta-data from template

Issue #74.
details.php: Change fake data payload for nav search

Issue #74.