Some changes in routing.xml

I've made some changes in routing file according to requests of contributors of http://forum.openstreetmap.org/viewtopic.php?id=17162 and my opinion. There could be some russian words and some inaccuracies in my routing file.
I think access hierarchy should be used, so that for example the combination of access=no + foot=yes does not get a penalty.
Same comment for bicycle case.