As part of upgrading old code I have made some small UX improvements to the Dictionary:

• Fixed a layout issue where the Dictionary only filled half the width of its container, in Study page
• Dictionary shows a "spinner" animation while it is loading
• In mobile + portrait mode, it fills the space better (hugs the edges). To close the dialog on a smartphone, either tap the small red cross (top right), or tap the shaded area at the bottom (where the layer ends)