#59 Remove setting of global app settings from mediator

[Alex Chmykhalo]

ApplicationBuilder::initApp() : line 158:

// TASK: remove setting of global app settings from mediator (fix for settings autocommit needed)
mPluginSettingsMediator->setSettings(mGlobalAppSettings);

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• Remove setSettings() method
• Get rid of using Settings class inside of PluginSettingsMediator