Sort by Nearest Deadline

Added a new sort option: Nearest Deadline. Sorts by the nearest deadline across tasks.

Improved UX when going back from a full-page view.

The search in various Project dialogs now searches by address.

Added safeguard against removing the last owner from a client.

Fixed issue where the sort wasn't being applied correctly on Deadline.

Fixed issue with the display of Deadline in task tooltip when hovering over the task column.