Give iwla to each display class

Add generic functions createPage() and createBlock() in DisplayHTMLBuild
Add and display IWLA version

default_conf.py

@@ -31,5 +31,5 @@ multimedia_files = ['png', 'jpg', 'jpeg', 'gif', 'ico',
                     'css', 'js']
 
 resources_path = ['resources']
-icon_path = ['%s/%s' % (os.path.basename(resources_path[0]), 'icon')]
+icon_path = '%s/%s' % (os.path.basename(resources_path[0]), 'icon')
 css_path = ['%s/%s/%s' % (os.path.basename(resources_path[0]), 'css', 'iwla.css')]