Bootstrap Array to String conversion fix

[WJRovers]

Hey There,

as reviewing your extension I came across some bugs. One of them being the bootstrap bug.
Yii2 allows multidimensional arrays to be put into the application's bootstrap (see http://www.yiiframework.com/doc-2.0/yii-filters-contentnegotiator.html)

When this type of bootstrap is used the application will spit out 'Array to String conversion' errors.
In order to fix this you can change a single line of code found in Bootstrap.php lines 28 to 32.

if ($moduleName) {
    // The module was added in the configuration, make sure to add it to the application bootstrap so it gets loaded
    $app->bootstrap[] = $moduleName;
    $app->bootstrap = array_unique($app->bootstrap, SORT_REGULAR);
}

(original:

yii2-audit/src/Bootstrap.php

Line 31 in a845ba3

$app->bootstrap = array_unique($app->bootstrap);

)

Hope this helps anyone 👍

[cornernote]

Hi @WJRovers,

Thanks!

Do you want to do the PR so you get credit for the commit?