Add strict test for whitespace at end of line

More work on coding style

include/openspace/documentation/documentationgenerator.h

@@ -33,10 +33,10 @@ namespace openspace {
 /*
  * This abstract class is used for instances when another class has the ability to
  * generate a Handlebar generated documentation file that contains valuable information
- * for the user. Instances of this are the DocumentationEngine results, the list of 
+ * for the user. Instances of this are the DocumentationEngine results, the list of
  * Property%s generated by the Scene, or the FactoryEngine results. The documentation is
  * generated through the writeDocumentation method.
- * 
+ *
  * The concrete subclass needs to overload the generateJson class that will return the
  * Json that is parsed by Handlebar to generate the webpage.
  *
@@ -57,7 +57,7 @@ public:
      * writeDocumentation method.
      * \param name The name of the written documentation
      * \param jsonName The variable name of the value generated by the generateJson
-     * \param handlebarTemplates A list of Handlebar templates that is added to the 
+     * \param handlebarTemplates A list of Handlebar templates that is added to the
      * documentation file
      * \param javascriptFilename The path to a Javascript source file that is added to the
      * documentation and that can contain additional functionality
@@ -76,7 +76,7 @@ public:
     /**
      * Create the documentation into the provided filename. Any existing file will be
      * silently overwritten. This method will call the generateJson method that can be
-     * used by concrete subclasses to provide the actual data that is provided in the 
+     * used by concrete subclasses to provide the actual data that is provided in the
      * documentation.
      * \param filename The filename in which the documentation is written
      */