Add a note about regenerating the `.less.css` files.  r=willkg
Tweaks to poxx.py

* add -s option so you can translate strings from the command line
* rewrite option handling to use optparse
* add r -> rr
[Bug 800324] Removed voting on redirected kb articles
Nix unneeded msg var
[bug 837796] Add missing comma #facepalm
[bug 828471] Mobile optimized activation page