FILTER_VALIDATE_EMAIL validation for email address and more

Added FILTER_VALIDATE_EMAIL validation for email address and whitspace clear 52a43c0
https://opencart.atlassian.net/browse/OC-1808

http://php.net/manual/en/function.filter-var.php (PHP 5 >= 5.2.0)
http://php.net/manual/tr/filter.filters.validate.php

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Approval item should available on pending approval link 1d42365
https://opencart.atlassian.net/browse/OC-1814

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Fixed addLink Pagination for search and special page 743a76a

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Fixed Order status on dashbord report 7f00f75

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Fixed table style in report tpl files 192d1cd