Updated FAQ page

* Changed the contact to our mailing list
* Bugs should be reported on our github page

Signed-off-by: Vasudev Kamath <kamathvasudev@gmail.com>
Misc fixes

* docs/hacking.rst: use oranization page instead of organization projec
* docs/index.rst: drop unused Indices and Tables section

Signed-off-by: Vasudev Kamath <kamathvasudev@gmail.com>