Add .gitignore

Ignore OS X junk
Add google analytics

Copied this file from
/usr/lib/pymodules/python2.7/sapling/themes/sapling/templates/site/ and
added google analytics to header, as advised by this link -
https://groups.google.com/d/msg/localwiki-organizers/2xMQH5c6WWo/cIJeLoE
dpv4J
Added front page banner

As advised here -
http://localwiki.readthedocs.org/en/latest/customizing.html#example-2-ad
ding-a-custom-css-file-on-every-page
Added basic favicon

We need to make our own, but this is better than have hover.com insert
theres
Merge pull request #4 from bschoenfeld/install

Put customized files under version control