Changes

• Refactored a bunch of the UI code for dialogue/message boxes to help prepare for some upcoming customization features.
• Changed default font for dialogue/message boxes.

Bug Fixes

• Fixed an in-game issue where dragging the inventory window or container windows quickly could cause the windows to lose the mouse focus.
• Modified behavior of the "Force Refresh of Navigation Paths" toolbar button so it will remove any invalid one-way paths resulting from some outstanding navigation creation bugs. If you are having any player navigation issues in your game, using this tool should now give an accurate up-to-date representation of all navigation paths.