Fixed
- Collapsed sidebar: with a small page gap (Zen's set to 1px, say) the essentials sat pressed
against the window's top. The column now starts at least as far down as the essentials sit
from its sides. - Collapsed sidebar: pointing at a folder showed its Delete Folder button squeezed beside the
icon; it's hidden in the icon column (the folder's menu still deletes it). - The window buttons and the space's name now stay level with the toolbar's buttons whatever
the page gap: with Zen's gap set below 6px, or the page edge to edge, they sat lower or
higher than the back and reload buttons.