Consolidate the Drupal 7, Drupal 9 page into a single Drupal page and re-organise Drupal content.

See merge request !46

#14 - clean up references to drupal 8

See merge request !45

Improve typographical emphasis

See merge request !44

Highlight what is *not* recommended in contrast to what is *recommended*

Add note on `--user` option when installing under Drupal 9

See merge request !42

(dev/core#1681) requirements.md - Bump up MySQL requirements

See merge request !43

Note on --user option when installing under Drupal 9 (reference https://github.com/civicrm/cv/issues/113#issuecomment-1071008468)

Remove D8 as a possible requirement since no longer supported

See merge request !41

Fix broken output in dompdf fonts section

See merge request !39

Update ESR Reference in the PHP requirements table and update php...

See merge request !38

Update ESR Reference in the PHP requirements table and update php compatability statements as appropriate

Update WP Multi-Site CiviCRM Multi-Domain Documentation

See merge request !36

Update docs for adding fonts to dompdf now that it's possible to do it and survive upgrade

See merge request !35

Improve instructions about temporary files upload directory

See merge request !34

Add PHP 8.0.

Closes #11

See merge request !33

Fixes #11

Changing link to point to existing documentation for installing l10n /...

See merge request !32

Changing link to point to existing documentation for installing l10n / localisation packages in Update index.md