Add lecture-notes for the 25.9.2013
Added end of lecture of 25.9.2013
Added lecture of 27.9.2013
Add parts of the lecture from the 2.10.2013
Add parts of the lecture from the 2.10.2013
Add lecture of the 2.10.2013
Add parts of the lecture from the 4.10.2013
Add lecture from the 4.10.2013