REF Switch to CRM_Core_Form::setTitle() instead of CRM_Utils_System::setTitle() part 1

[mattwire]

Overview

Follows on from some work that @eileenmcnaughton started in 2019. Forms should use $this->setTitle() instead of CRM_Utils_System::setTitle() because it allows you to use $this->getTitle() on a form to get the title of the form that the user will see.

Before

Calls to CRM_Utils_System::setTitle()

After

Calls to $this->setTitle()

Technical Details

As can be observed CRM_Core_Form::setTitle() calls CRM_Utils_System::setTitle() internally after setting $this->_title showing that this function is a drop-in replacement. There are just over 200 instances that need converting and (for ease of review) I've only included the first 43 here.
I would suggest that r-run testing could be done with a few forms only instead of all of them - what needs to be verified is that it is a form that inherits from CRM_Core_Form (and not eg. a Page).

Comments

There are 4 commits in total that would complete this change and I'll follow up with the others - see https://github.com/civicrm/civicrm-core/compare/master...mattwire:settitle?expand=1

[civibot]

(Standard links)

• If this is your first pull-request for CiviCRM, please browse CONTRIBUTING.md for information about the development and testing processes.
• If you are reviewing this pull-request, you may wish to consult the test sites and the Review Standards (long template, short template).

[eileenmcnaughton]

This seems safe, consistent & straight forward - merging