Changed the content of the about page,
changed the size of the letter to 15px and remove the Read more about us from the index page.
Change the courses` structure:
-add OTHM4 page
-add OTHM5 page
-add OTHM6 page
Change unorder and order list` size
Correct the name of the courses title
Merge pull request #42 from annaszekely/feature/courses_update_110714

Change the courses` structure:
Put back the pics to the main page
Merge remote-tracking branch 'sharp/master' into feature/about&index_110714

Conflicts:
	courses.html
Change letter` size in the line 143
Merge pull request #41 from annaszekely/feature/about&index_110714

Changes of 110714 (about/index page) + size of the letters