[ticket/12220] Fix division by zero in search page with no results.

The page url parameter no longer exists in the pagination.on_page() method,
therefore the page url passed is being divided by 0 - the total number of
items. Since PAGE_NUMBER is assigned in generate_template_pagination(), this
separate assignment is no longer needed.

PHPBB3-12220
Merge pull request #2053 from prototech/ticket/12220

[ticket/12220] Fix division by zero in search page with no results.

* prototech/ticket/12220:
  [ticket/12220] Fix division by zero in search page with no results.
[ticket/12205] Do not display 0 for empty integers when show_novalue is off

PHPBB3-12205
Merge remote-tracking branch 'nickvergessen/ticket/12205' into ticket/12205-develop

* nickvergessen/ticket/12205:
  [ticket/12205] Do not display 0 for empty integers when show_novalue is off

Conflicts:
	phpBB/includes/functions_profile_fields.php
Merge pull request #2060 from nickvergessen/ticket/12205-develop

[ticket/12205-Develop] Do not display 0 for empty integers when show_novalue is off
[ticket/12194] Ensure that field_show_novalue is present

The field was not created on boards that were 3.1-dev before 3.0.11 was relesed

PHPBB3-12194
Merge pull request #2062 from nickvergessen/ticket/12194

[ticket/12194] Ensure that field_show_novalue is present