Add regular expression support to list of user agents to exclude (#16766)

* Add regular expression support to list of user agents to exclude

- Added regex support to Administration -> Websites -> Settings ->
Global list of user agents to exclude
- Made sure old tests that use stripos() pass
- Added new tests
- Added a sentence to the inline help area about regex support
- Fixed a typo elsewhere as specified in the original issue.

Closes #14186.

Updated method and tests following code review

Update plugins/WebsiteMeasurable/MeasurableSettings.php

Co-authored-by: Stefan Giehl <stefan@matomo.org>

Update system tests

* Update screenshots for UI tests affected by the copy changes

1 files changed, 3 insertions, 1 deletions

diff --git a/plugins/WebsiteMeasurable/MeasurableSettings.php b/plugins/WebsiteMeasurable/MeasurableSettings.php
index c4e384aa3c..749a32e8a3 100644
--- a/plugins/WebsiteMeasurable/MeasurableSettings.php
+++ b/plugins/WebsiteMeasurable/MeasurableSettings.php
@@ -235,7 +235,9 @@ class MeasurableSettings extends \Piwik\Settings\Measurable\MeasurableSettings
                 . '<br /><br />'
                 . Piwik::translate('SitesManager_GlobalListExcludedUserAgents_Desc')
                 . '<br />'
-                . Piwik::translate('SitesManager_GlobalExcludedUserAgentHelp2');
+                . Piwik::translate('SitesManager_GlobalExcludedUserAgentHelp2') . " "
+                . Piwik::translate('SitesManager_GlobalExcludedUserAgentHelp3', "/bot|spider|crawl|scanner/i")
+            ;
             $field->uiControl = FieldConfig::UI_CONTROL_TEXTAREA;
             $field->uiControlAttributes = array('cols' => '20', 'rows' => '4');
             $field->transform = function ($value) use ($self) {