Update bundled jquery js lib

[marek-parfianowicz]

OWASP dependency checker reacts on the old version of jquery bundled in clover.jar (clover-ant). The old version of jquery has security vulnerabilities.

clover.jar: jquery-1.8.3.min.js
openclover-ant/clover.jar/html_res/adg/jquery-1.8.3.min.js

[marek-parfianowicz]

Original report: https://bitbucket.org/openclover/clover/issues/113