Feature/meta identifier list (#1357)

Updating asset.meta.identifiers to be dictionary/list instead of string

include/openspace/documentation/documentationgenerator.h

@@ -102,6 +102,16 @@ private:
  */
 std::string escapedJson(const std::string& text);
 
+
+/**
+ * This function takes a \p list of text and escapes all necessary characters () that JSON
+ * does not want in its strings.
+ * \param text The list text that is to be escaped
+ * \return The same text will all required characteres escaped
+ */
+std::string escapedJson(const std::vector<std::string>& list);
+
+
 } // namespace openspace
 
 #endif // __OPENSPACE_CORE___DOCUMENTATIONGENERATOR___H__

include/openspace/scene/asset.h

@@ -56,7 +56,7 @@ public:
         std::string author;
         std::string url;
         std::string license;
-        std::string identifiers;
+        std::vector<std::string> identifiers;
     };
 
     /**