add comments and pep8, add div element to html files

main/modules/index.py

@@ -4,7 +4,9 @@ import cherrypy
 class wellcome(object):
 	@cherrypy.expose
 	def index(self):
+		''' Method for open specific  html file
+		and change it'''
 		with open('templates/index.html') as fh:
 			index_f = fh.read()
 		result = index_f.format(_title='Titulni_strana', _heading='Vítejte!')
-		return result
+		return result