#260 Do not use extract() in template display, use $variables directly instead

[Lukasz032]

Template file:

• line 7, phpdoc comment: defined $variables as an associative array (builtin include() infers context, so parent's $variables is visible here).
• line 12: isset($x) && $x can be always shortened as !empty($x) + actually used parent context's $variables to access what we need
• lines 18 and 22: ditto

Also, since extract is now unnecessary, I've removed it from the Helper class.

Fixes: #260

[Pathan-Amaankhan]

Hi @Lukasz032,

Thanks for the PR 🙌.

Before we proceed with the review, we’d really appreciate it if you could add appropriate spacing to align with the WordPress PHP Coding Standards.