Persist ordered book writing and restore Legacy book pages

src/main/resources/assets/rivencraft/lang/en_us.json

@@ -60,6 +60,10 @@
   "screen.rivencraft.age.name_prompt": "Name this Age before writing the Descriptive Book",
   "screen.rivencraft.age.create": "Create",
   "screen.rivencraft.age.generator": "Terrain: %s",
+  "screen.rivencraft.age.pages": "Pages",
+  "screen.rivencraft.age.details": "Details",
+  "screen.rivencraft.age.pages_count": "Writing %s/%s",
+  "screen.rivencraft.age.pages_not_applied": "Symbols not applied yet",
   "screen.rivencraft.age.trait.biomes": "Biomes: %s",
   "screen.rivencraft.age.trait.lighting": "Lighting: %s",
   "screen.rivencraft.age.trait.weather": "Weather: %s",
@@ -110,7 +114,6 @@
   "generator.rivencraft.void": "Void",
   "generator.rivencraft.random_vanilla": "Standard",
   "screen.rivencraft.book.preview_pending": "Loading destination...",
-  "screen.rivencraft.book.click_to_link": "Click the panel to link",
   "screen.rivencraft.book.explore": "Explore",
   "screen.rivencraft.book.exploring": "Exploring",
   "screen.rivencraft.book.return_from_explore": "Right-click to return",