[issue] PHP shorttag break the layout

Hello,

Unfortunately, you forgot some PHP short tags in line 114 and 278 which mess up with any PHP configuration that do not have short_open_tag set to 1.
To solve this issue, simply replace <? by <?php.

This issue might totally break the layout of the admin page and output directly the php code.

Please read https://php.net/manual/en/language.basic-syntax.phptags.php and https://www.php.net/manual/en/ini.core.php#ini.short-open-tag for more information.

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