[-API] FLOW3 (Configuration): Removed the Configuration Manager's getSettings() method! If you relied on this method please use getConfiguration() instead, but be aware that this is not an official API method. The recommended way to retrieve settings are injectSettings() methods (see manual for more information). Relates to #5577
[~TASK] FLOW3 (Configuration): Cleaned up and refactored the Configuration Manager's loadConfiguration() method. Resolves #5577
[BUGFIX] FLOW3 (Configuration): Fixed build of the caches configuration array. Resolves #5576.