Upgrade to jquery 10

ok this is still a WIP, help is much appreciated :)

there are some things that are needed to be done:
[ ] $.browser was removed, it is recommended in the guides to use  http://modernizr.com/ to know the browser but that's overkill imo. something like [this](http://pupunzi.open-lab.com/2013/01/16/jquery-1-9-is-out-and-browser-has-been-removed-a-fast-workaround/) should be enough... thoughts?

[ ] There is an issue with infinitescroll in the contacts page. in [this](https://github.com/diaspora/diaspora/blob/develop/vendor/assets/javascripts/jquery.infinitescroll-custom.js#L611) line, changing  jQuery.event.handle to jQuery.event.dispatch will do the trick but it's kind of hacky and probably the error is somewhere else because this works in the stream...

[ ] Test a lot, doing the workarounds mentioned above I was able to have specs and cukes green, but had some failures in jasmine... Probably there are some errors in the app that the tests don't cover :(