Update community information

[carlavilla]

Summary

Update community information:

• The Spanish mailing list are down.
• The Polish web URL was wrong.
• Update webresources information.
• In the community.xsl, the LinkedIn group id was wrong and the last activity in the twitter @freebsdblogs account was in 2013

Test Plan

Compile the website.

[bcr]

Two minor issues.

en_US.ISO8859-1/htdocs/community.xsl

143 ↗

(On Diff #66376)

These "<a href"s need to be indented according to:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/fdp-primer/writing-style-guide.html

You'd do it like this:
... <a<ENTER>
<extra tab until the closing </a>>href="..">

147 ↗

(On Diff #66376)

The comma needs the be there in front of the "or".

[carlavilla]

Fixed, thanks!

[bcr]

Looks good to me.