GUI implemented

TODO: GUI needs work

This decision was made based on the lack of CORS-enabled SPARQL endpoints, which difficults the use of client-base queries.

Adding explanation when sqlite db is not writable

Now when a component is clicked, the first model and view is opened

The new button in views is hidden, since is very unlikely it will be ever needed in visualbox (compared to LODSPeaKr)

Use of the fragment in the editor's URL to load a component (e.g., when loading http://server/admin/components#myviz, the component "myviz" will be loaded, if exist)