Word censoring should not work on URL BBcode

Hello,

If you add a word censoring. It's automatically censored on text message but also in the URL BBcode.

For example:
If 'shit' is on the word censor and parse by s**t
When I want to insert an URL like h**p://en.wiktionary.org/wiki/shit
The URL is removed and it unable to use it.

The censor_text() function work on full text and should not remove word censoring in URL and URL BBcode.