Issue 412 - Warnings for Quotes

This issue ensures that the fix properly warns for the following:

- The `style` attribute in the paragraph tag has three closing quotes, and the `name` has an extra closing quote. This should generate a warning for each extra quote (todo: only warn once, and indicate the name of the attribute).
- Both `is` and `id` should report missing quotes.
- Tidy will not notice that the value for `id` is "midnight shows", and will create a new attribute called `shows`, which is reported as being proprietary.

You are cool.