[FIX] website_blog: prevent crawler on multiple blog tags page

Before this commit:
If a blog had multiple tags on the page, the crawler would click on every one
of them one after another until every tags combination got crawled.
With a lot of tags, this could result in million of URLs.

Now, we prevent URLs with more than one tag to be crawled.

Eg: With tags 'A', 'B', C':
/A
/A/B
/A/C
/A/B/C
/A/C/B

/B
/B/A
/B/C
/B/A/C
/B/C/A

/C
/C/A
/C/B
/C/A/B
/C/B/A

0 files changed, 0 insertions, 0 deletions