Fixed some links

* Added Google group to FAQ on docs
* Changed IRC link
* Fixed link to contributing broken by 326faec
Fixed broken link in README
Merge pull request #867 from Turbo87/patch-1

Fixed broken link in README
Support for special namespace 'src' (highland support)
Escape remote names on repo push/pull
Merge pull request #814 from dotcloud/708-pushpull-multislash

Support for special namespace 'src' (highland support)
docs/api/remote: fix rst syntax in the "Search images" section
Merge pull request #840 from dhrp/just-fixed-some-links

Fixed some links. Closes #839 #838 #835
Merge pull request #869 from fsouza/fix-api-docs

docs/api/remote: fix rst syntax in the "Search images" section
Add list of Docker Remote API Client Libraries. Fixes #800.
Add links to libraries, fix #800