gnus-html.el (gnus-html-image-fetched): Don't kill the temporary buffer after being...

gnus-html.el (gnus-html-image-fetched): Don't kill the temporary buffer after being called.  It's apparently being killed by url.el, and killing it made point move to end-of-buffer in a random buffer.
shr.el (shr-image-fetched): Ditto.
shr.el (shr-image-fetched): Avoid having point move in the article buffer.
gnus-html.el (gnus-html-image-fetched): Kill the buffer anyway, and fix the bug in url-http.el instead.
shr.el (shr-image-fetched): Ditto.
gravatar.el (gravatar-retrieve): Be silent when retrieving.
gnus-gravatar.el (gnus-gravatar-insert): Don't move point around in the article buffer.
 (gnus-gravatar-insert): Use blank space from the current buffer to avoid breaking text properties.  This makes X-Sent updating work again.
gnus-art.el (gnus-article-read-summary-keys): Don't call disabled commands.