jquery update 1.7.1 -> 1.8.3

As current jquery version is from 2011 I thought switching to a newer one could be a nice thing;
Cannot tell if this resolves bugs; tested on Chrome (Mac) and it worked for me.

Changed jquery version from 1.7.1 to 1.8.3 which seemed to work without problems in my tests.
Strangely every 1.8.x version above 1.8.3 fails, as well as every 1.7.x version above 1.7.2, as well as newest version 1.9.0.
These versions always result in a error message in pad view telling something about an unexpected character. I dont't have the time to dig deeper...