OPM/opm-core — pull request #139 by totto82 (2013-02-05 12:54:24+00:00)
Title: minor changes to the tutorials and doxyfile.in to make the documenation on the webpage nicer

- A few line of text is added to tutorial3 and 4
- A relative path is used for the HTML_STYLESHEET in doxyfile.in
- A image path "--/Documentation/Figure" is added in doxyfile.in