Keep order of typoscript keys

[nicodh]

The keys in a typoscript configuration are considered to express the priority of the values.

Like in view.templateRootPaths the highest value should be used. This is not the case with the current implementation.

This might be caused by a core issue, since
->getConfiguration(ConfigurationManagerInterface::CONFIGURATION_TYPE_FRAMEWORK, 'femanager'); should return the arrays in correct order. But it doesn't, the key depend on the order of imports of typoscript.

The Typoscript Module takes that in consideration and shows the correct order:

The configuration received in

femanager/Classes/Utility/TemplateUtility.php

Line 48 in 74e3661

$configuration = self::getConfigurationManager()

has a random order:

Since finally only the last entry is returned in

femanager/Classes/Utility/TemplateUtility.php

Line 85 in 74e3661

return $matches === [] ? '' : end($matches);

this results in a false value. It is not possible to override the value from outside

This PR restores the order by sorting the keys and returning an array of sorted entries according to the key order.

[nicodh]

Related to #344 which is not solved yet