Update pagebreak.php

[#33055] makes no sense to keep the adding point; With > php5.5 it would create a notice, because the $row->toc doesn't exist at that specific time.
Code Style Fixes
Code Style Fixes!
Code Style Fixes!
Code Style Fixes!
Code Style Fixes!
Merge pull request #2760 from puneet0191/staging

Code Style Fixes, Selenium System Tests
Merge pull request #2742 from oe1tkt/patch-1

[#33055] Update pagebreak.php;  If pagebreak added to article a Notice: Undefined property: stdClass::$toc in pagebreak.php is created
Merge pull request #2759 from mbabker/helpTOC

[#33082] Help screen index missing
Code Style Fixes!
Code Style Fixes!
Code Style Fixes!
Code Style Fixes!
Code Style Fixes!
Merge pull request #2767 from puneet0191/staging

Code Style Fixes, Selenium System Tests
[#] Fix spinner not appearing while installing language

This old change make it to stop working: https://github.com/joomla/joomla-cms/commit/08658c34cbc45db8e578277a468517a756e2846d
Fix code style: move spaces to tabs in all JS function
Merge pull request #2774 from javigomez/fix_spinner_in_language

[#] Fix spinner not appearing while installing language
For Info: the issue could be reproduced in Firefox on Windows XP. Merging.
[#32687] JPath::clean: $path is not a string - regression
[#33105] vaildate email broken for IDN domains