Use source version of jquery 1.9.1

Hello
Some standards such as Debian Free Software Guideline requires that all files in upstream source be distributed as a source version. As such, jquery minimized version does not qualify.

Please replace test_project/static/jquery.js by the readable version of jquery, which can be downloaded at https://code.jquery.com/jquery-1.9.1.js.

This is used only in tests, and should not have any impact on your distribution.