Rename concepts

[MattiSG]

Since Watai creation, some concepts have gone mainstream and took different names. Watai should reflect these names to ease adoption.

• [x] Hook → Locator
• [x] Widget → Component
• [x] Data → Fixture
• [x] Feature → Scenario (?)
• [x] Flow → Verbose

[MattiSG]

@davidbgk @gillesfabio & watchers: Opinions on Feature vs Scenario?

[davidbgk]

@MattiSG scenario sounds more familiar to me on that topic and my tests are more testing scenarios than features.

[MattiSG]

Great, thanks a lot for the feedback!