Safer bin/jenkins.sh

If someone runs bin/jenkins.sh without first setting $WORKSPACE,
don't cd to their home directory and start rampaging around.
Just use the current directory.
validate bing webmaster tools bug 875932
Merge pull request #919 from alexgibson/bing-webmaster-tools-bug-875932

validate bing webmaster tools bug 875932
stray span on customize page changing personas to themes bug 860996
Merge pull request #920 from alexgibson/stray-span-on-customize-page-bug-860996

stray span on customize page changing personas to themes bug 860996
Merge pull request #918 from dpoirier/safer-jenkins.sh
Merge remote-tracking branch 'upstream/master'
Bug 730627 Fix donottrack.us link text
Merge pull request #921 from retornam/bug-730627-donottrack

Bug 730627 Fix donottrack.us link text
Merge remote-tracking branch 'upstream/master'
Add localized banner for sr

Added localized moz-15-mark-sr.png for Serbian (sr), arranged rules in
alphabetic order.