Reudced selector specificity. New form and list defaults.

[cshold]

Form selectors:

• The form selectors are too specific right now. Using input[type="XXXX"] means a single class won't override it.
• By moving to simply input, we can style all inputs the same and override them with classes whe needed.
• radio and checkbox styles are overwritten on the element level
• input[type="image"] is overwritten on the element-level.
  • This comes up with additional_checkout_buttons (PayPal especially_

Lists

• Allow list styles to be applied in RTE too

Updated templates:

• Updated various ul elements to include no-bullets class
• Updated customer templates to make forms vertical, rather than default horizontal

@stevebosworth @mpiotrowicz

[mpiotrowicz]

i don't think we should be this opinionated about form input styling by default. There was a good discussion about this in FED slack earlier today, but by styling form elements directly, if you want to create any variation within the theme for those elements, you'd need to undo all of these styles in that variant.

[mpiotrowicz]

does timber as a base even need form styles out of the box? Presumably these are overwritten by each theme anyway?

[mpiotrowicz]

... i still think this is too opinionated as a default? How would these be overwritten if a variant on an input was required? @cshold

[cshold]

This is a step to reduce selector specificity, which I think it accomplishes. It's not perfect, so we'll revisit the reset vs base styles in another PR shortly.