Created by: kevinparkerson
Addresses issue #14607 (closed) by adding 'no-title' to the popover tip.
If you'd prefer a different class name instead of no-title please let me know. The .find('.popover-title').hide() portion of this line could actually be removed, in favor of hiding the title via LESS and the new no-title class... if you think that change would be worthwhile, I could throw that in there.
Additionally, I tested this minor change via the bootstrap/js/tests/visual/popover.html and by running grunt test, however I did not commit the dist files that were generated. Let me know if you'd like those to be included and I will do so (along with a squash to make it one commit). Thanks!