FAQ.md: Expound on instant answer conflicts.

Partially fixes https://github.com/duckduckgo/duckduckgo-documentation/issues/73
FAQ.md: Added DuckDuckHack mailing list.
Styleguide: Update variable name
Merge pull request #91 from duckduckgo/jag/js-style

Styleguide: Update variable name
code_styleguide: Filled out Javascript and some CSS
code_styleguide: semicolons != commas
Merged @moollaza's additions to code_styleguide
code_styleguide: clarified tabs, added example for goodie css
Merge pull request #92 from duckduckgo/mattr/code-styleguide

code_styleguide: Filled out Javascript and some CSS
Merge pull request #87 from duckduckgo/jag/faq

FAQ.md: Expound on instant answer conflicts.
Update phrasing and organization of code style guide