Restored missing global::create call to tests app

tests/main.cpp

@@ -43,7 +43,8 @@
 int main(int argc, char** argv) {
     using namespace openspace;
     ghoul::initialize();
-
+    global::create();
+    
     // Register the path of the executable,
     // to make it possible to find other files in the same directory.
     FileSys.registerPathToken(