fix some more headers, delete some obsolete docs

fix image version

Profile config: Fix headings

Fix more headings

Markdown: Fix headings for static site

php-constant-time.deb no longer used

update repo_backup.sh

update repo_backup script

fix typo

small text fixes

link to PORTAL_ADMIN from GUEST_ACCESS page

update repo_backup.sh

document local database user authentication

fix typo

also document Debian Apache config, fix typos

use basearch variable

simplify

add EL repo config

make reset a MUST

add JSON client config to ROADMAP