Livedata Refractor UI to take full advantage of vuejs

For now, there are two files for each vue component:

• a `.js` file that create a Vue instance, wrapping the component
• a `.html` file containing the vue single file component

This allows the vue component to be used even inside plain js / html, however this is quite heavy and most of the UI is already using vuejs. So the decision was made to get rid of the vue instance wrapper and to use the vue framework normally.