* optimized the index for smartphones

* added language links above the picture on startpage, because on some systems its not scrollable

* rewrite some sentences in the credits for a better understanding and change the color of one of them so nobody can read it

* I forgot the border around the german flag and the creditpage is still unchoosable, if you start it as html5 from a mobile device

* link to the new credits: http://jagger.bplaced.net/credits.html

* correct some typo, added two commas and take one away :-)