IRC page fixed for de, fr and sl
Merge pull request #192 from peterkokot/patch-sl

[fix] [de,fr,sl] IRC page fixed for de, fr and sl
Deprecation of the Icu component
Merge pull request #193 from WouterJ/patch-4

Deprecation of the Icu component
don't promote the #symfony-dev IRC channel

No active communication is taking place in #symfony-dev on Freenode.
Therefore, it's better not to promote it on symfony.com.
Merge pull request #194 from xabbuh/remove-irc-meetings

don't promote the #symfony-dev IRC channel
slovenian translation fixed
Updated the contents of the IRC page

* Added all the official Symfony channels.
* Updated the IRC tools section.
Merge pull request #195 from peterkokot/patch-sl

[fix] [sl] slovenian translation fix
Merge pull request #196 from javiereguiluz/patch-2

Updated the contents of the IRC page