Fix for issue #299 (https://github.com/cbeust/testng/issues/299)

In index.html report, the chronological-class div tag is not closed.
Adding an XMLStringBuffer pop() for the last chronological-class div tag (if any).
modified:   src/main/java/org/testng/reporters/jq/ChronologicalPanel.java
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of https://github.com/sbourdon/testng