Update Ghoul version

Make the modules depend on C++14
Change the OpenSpace code to the new Ghoul version

modules/newhorizons/util/instrumentdecoder.cpp

@@ -24,6 +24,9 @@
 
 #include <modules/newhorizons/util/instrumentdecoder.h>
 
+#include <ghoul/misc/assert.h>
+#include <ghoul/logging/logmanager.h>
+
 namespace {
     const std::string _loggerCat  = "InstrumentDecoder";
 	const std::string keyDetector = "DetectorType";

modules/newhorizons/util/sequenceparser.cpp

@@ -28,6 +28,8 @@
 #include <openspace/util/spicemanager.h>
 #include <modules/newhorizons/util/decoder.h>
 
+#include <ghoul/logging/logmanager.h>
+
 namespace {
 	const std::string _loggerCat = "SequenceParser";
 	const std::string keyTranslation = "DataInputTranslation";