[vuejs] Convert the dashboard view

[fdaugan]

The home home page is a dashboard displaying v-cards, each one is a node representing a "tool".

• Title: icon, name, satus = progressbar, healthy vs unhealthy subscription for this node)
• Content : dataTable, same as the project view, but without the node type/name
• On click on the table row, go to the related project

Each card can be collapsed.
Add a button to collapse/uncollapse all
Each card has a preferred color. Either guessed from the SVG icon of the tool, either provided (need data model evolution) by the plugin

[Terracosmos]

Done in #27 (merged). Closing manually since cross-branch merges into feature/vuejs don't trigger the auto-close keyword.