Remove first level of tree with database type in left sidebar

[MurzNN]

At now left sidebar contains unnecessary root tree item (inside blue rectangle), containing current database name and version, that can be collapsed (for what?), and increase the whitespace from the left. For what reasons it is needed? Will be good to remove it as tree element, and place it as simple text line under the tree (like "selected DB" line). This will move "Databases", "Tablespaces" and other items more to the left side (in root level of tree), giving more horizontal space in tree for table names and other inner items.