LED-Device updates (#1315)

* SPI Fix - Free allocated memory in case of invert

* Remove development statement

* UI updates

* Minor corrections

* Tpm2net Fix - Free allocated memory

* LGTM Finding

* Add config directory and user type to SysInfo

* WS281x - Ensure that device runs with root priviliges

* WS281x - Update DMA defauls as per rpi_ws281x recommendation

* Support Sysinfo for Qt < 5.10

* Address LGTM finding

include/hyperion/HyperionIManager.h

@@ -102,6 +102,8 @@ public slots:
 	///
 	bool saveName(quint8 inst, const QString& name);
 
+	QString getRootPath() const { return _rootPath; }
+
 signals:
 	///
 	/// @brief Emits whenever the state of a instance changes according to enum instanceState

include/utils/SysInfo.h

@@ -21,12 +21,16 @@ public:
 		QString prettyName;
 		QString hostName;
 		QString domainName;
+		bool isUserAdmin;
 		QString qtVersion;
 		QString pyVersion;
 	};
 
 	static HyperionSysInfo get();
 
+	static bool isUserAdmin();
+	static QString userName();
+
 private:
 	SysInfo();
 	void getCPUInfo();