refs #3798 Wiki maker does not work for these files (complaining about not...

refs #3798 Wiki maker does not work for these files (complaining about not registered algorithms), so I have rather did reverse (partial) work filling up the wiki and copying the part of the text into the code. 

Though the wiki maker, if works, would be rather convenient way of building the wiki pages, current Wiki description has more information than the one, provided with the code.