Incorrect representation of master overnight documentation build

[albert-github]

When looking at the overnight documentation builds through https://cgal.geometryfactory.com/CGAL/Manual_doxygen_test/ we see when:

• for each of the available builds (1.8.13, 1.9.6, master)
  • click the version
  • click in the left hand tree "Package Overview"
  • select the "User Manual" of the first package ("Algebraic Foundations")

We see for:

1.8.13

1.9.6

master

My analysis:

In he HTML source of the 1.8.13 and 1.9.6 versions we see:

<!-- This should probably be an extrastylesheet instead of hardcoded. -->
<link href="../Manual/cgal_stylesheet.css rel="stylesheet" type="text/css">

and later on

<link href="cgal_stylesheet.css" rel="stylesheet" type="text/css">

Though in the master version we only see:

<link href="cgal_stylesheet.css" rel="stylesheet" type="text/css">

This setting is due to the, correct, setting, in BaseDoxyfile.in, of

HTML_EXTRA_STYLESHEET  = ${CGAL_DOC_RESOURCE_DIR}/cgal_stylesheet.css

but the file is not copied to the relevant package directories when copying the files from the build directories to the "display" directories (https://cgal.geometryfactory.com/CGAL/Manual_doxygen_test).
That the 1.8.13 and 1.9.6 versions do work is probably due to the double setting and the fact that the the css file(s) of the Manual directory is(are) copied.