Cleanups and troubleshooting section

See merge request documentation/docs/sysadmin!338

Add that group join confirmation by email is handled by bounce processing.

See merge request documentation/docs/sysadmin!337

Update oauth.md

See merge request documentation/docs/sysadmin!335

We should phrase this as an 'if' statement so that nobody reads the first part...

See merge request documentation/docs/sysadmin!336

We should phrase this as an 'if' statement so that nobody reads the first part not realising that the subsequent sub-bullet point then says 'this doesn't work if you do via settings'.

Update membership type behavior on multisite.md

See merge request documentation/docs/sysadmin!334

documentation/docs/installation#14 - Indicate which civi version is the last to support drupal 8.x

See merge request documentation/docs/sysadmin!333

Remove old content-migration directory.

See merge request documentation/docs/sysadmin!332

Update to include support for D8, D9, partial for D10

See merge request documentation/docs/sysadmin!331

Update drupal7.md to let people know that they may need to clear views cache...

See merge request documentation/docs/sysadmin!330

Update drupal7.md to let people know that they may need to clear views cache to get views working after an update. Don't know if drush cc clears but it's inconsistent in my experience.

Update oauth.md - i added instructions re giving the user Permissions - not...

See merge request documentation/docs/sysadmin!329

Update oauth.md - i added instructions re giving the user Permissions - not sure what the equivalent would be via cli (or perhaps it needs a separate section saying 'give your user permissions' if there is no approach to doing this via cv (I suspect not)

Update backdrop.md - add cv upgrade option

See merge request documentation/docs/sysadmin!328

5.43 Upgrade: Fix new payment instrument token

See merge request documentation/docs/sysadmin!327

Update logging.md with new menu name

See merge request documentation/docs/sysadmin!324

Update drupal8.md: Adding "--with-dependencies" parameter. If not, updating...

See merge request documentation/docs/sysadmin!326

Update drupal8.md: Adding "--with-dependencies" parameter. If not, updating from 5.36 to 5.43 is partial, for example. 

Add documentation for using afform in WordPress shortcodes

See merge request documentation/docs/sysadmin!325

Add documentation for using afform in WordPress shortcodes, see dev/report#82