Another huge bunch of new UI translations (some reported by Leon Cheung, thanks!)...

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54670 954f8c5b-7b00-dc11-b283-0030488c597c
Add CTX_wm_operator_poll_msg_set as auto-detected func for translations.

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54671 954f8c5b-7b00-dc11-b283-0030488c597c