Default link doesn't display underline

[theadamparker]

Currently the default link shows no visual distinction from plain text. It should have a red underline.

[theadamparker]

Related to #888

[Jura]

@theadamparker , @devjgigas , @Malakeldardiri , I think we should move default hyperlink treatment from Atoms section to generic typography. In my view default setting for tag should be part of our baseline stylesheet and not optional plugin as it is done right now. What do you think? I'd also keep it animated by default, not just underlined. Please share you thoughts.

[Jura]

To illustrate the point, hyperlink tag styling is defined in https://github.com/undp/design-system/blob/master/stories/Atom/Typography/Links/link.scss , but I'm suggesting to move it to https://github.com/undp/design-system/blob/master/stories/assets/scss/_typography.scss to make sure it is the part of base stylesheet. We will keep story definition intact, just relocate the rule

[theadamparker]

@Jura I agree that it should be moved to generic typography and animated by default.

[Jura]

@devjgigas , can you please merge link.scss style definitions to _typography.scss, somewhere after hr definition? You might also want to remove .animated-link class definition and merge its contain with default a tag treatment.
Link Atom Story won't need any specific .scss file, you can delete it and update .jsx template accordingly. Please also update documentation as we won't use that class anymore