Create or update the breadcrumbs in the site administration
pages where it is required.
Highlight the corresponding site adminstration tab.
Highlight the primary nav to Site administration when user
is navigating to any of the site administration pages.
Also changed the boostnavbar so that the nodes in the secondary
navigation are not shown in the breadcrumbs when user is in site
administration page.
A new component has been created, core_adminpresets, and tables and some
API methods from this tool have been moved there, so it can spread over
other plugins.
Currently, the tool_admin_presets plugin only provides the UI to interact
with the core adminpresets stuff.
A new setting, $CFG->setsitepresetduringinstall, has been added to
config file, to let admins define the site admin preset to be applied
during the Moodle installation.
Besides, a new parameter, "--sitepreset" has been also added
to admin/cli/install.php, to let define it too when running the
upgrade process using CLI.
Paul Holden