a couple of tweaks for bbcode posts

code blocks are now working properly (was getting extraneous <pre> tags)
URL blocks are working properly too
italics inside blockquotes weren't doing anything for blogspot posts

because default style for blockquotes on Blogspot _is_ italics
so changed it to make italicized text in blockquotes non-italics instead
make it so "copied to clipboard" doesn't show up if blogify fails