Rename highlight annotations to hover annotation

__tests__/src/actions/annotation.test.js

__tests__/src/components/CanvasAnnotations.test.js

__tests__/src/lib/CanvasAnnotationDisplay.test.js

__tests__/src/reducers/windows.test.js

src/components/CanvasAnnotations.js

src/containers/CanvasAnnotations.js

src/state/actions/action-types.js

src/state/actions/annotation.js

src/state/reducers/windows.js