Includes the new params from https://github.com/civicrm/civicrm-core/pull/17824 and how to use them.

* Docs for civireport outputhandlers

* Update hook_civicrm_alterReportVar.md

Co-authored-by: Mikey O'Toole <mikey@mjco.uk>

Lifecycle: clarify the steps to transfer maintainership of an abandoned extension

Add in example of how to replace hook_civicrm_apiWrappers with the equivilant style in Symfony event listener (#835)

* Create hook_civicrm_customPre.md

* Update hook-summary script to generate correct links and work following mkdocs changes and also document new customPre hook in the list

Co-authored-by: Seamus Lee <seamuslee001@gmail.com>

Per comments lower down html_type is recommended for & quick_form_type is not required in this case

See https://github.com/civicrm/civicrm-core/pull/18005 for work
to standardize this, but it's already common practice.

Fixed due to https://github.com/civicrm/civicrm-core/pull/16629

* Update Documentation following update to Symfony version in CiviCRM Core

* Update docs/hooks/hook_civicrm_container.md

Co-authored-by: Mikey O'Toole <mikey@mjco.uk>

Remove the duplicated settings_page row in the table and fix the link to the DAO information on pseudoconstants (#825)

Add note about empty and propertyBag pre 5.28

* Remove suggestion that you *must* use the new parameters 

The docs were incorrectly stating that *only* the new properties are available - as can be demonstrated in this tested code in core - https://github.com/civicrm/civicrm-core/pull/17585/files#diff-925c5486a3ef170b6613caf3da110a18R627 - the legacy params still work and while we recommend change no action is required

* Update to reflect discussion 

I also added clarity on the doCancelRecurring after it was unclear to @KarinG in chat

Add `settings_pages` to main spec

Add note in about deprecation of CRM_Core_Error::fatal

updated the file system documentation link

Document how to implement cancel recur for payment processors

Update hook_civicrm_alterLogTables - Fix unclear statement regarding …

Update civix.md

Removed $ from bash commond, "$" makes problem while copying the command.