More capitalization fixes.

- Instant Answer
- IMDb
determine_your_instant_answer_type: remove redundant sentence.

I was going to fix up the sentence to be less awkward, but it turns out
it just repeats the paragraph above with less information.  Thus,
removed.
goodie_basic_tutorial: minor sentence structure updates.
faq: update links to the Ideas Forum.

Also, minor rewrite of the how non-coders can help text.
Merge pull request #156 from duckduckgo/mwm/nitpicks

More Capitalization Changes.