Add mod documentation in seven languages

locale/ui_en.properties

@@ -1,5 +1,5 @@
-mod_characters_editor_name = Character Editor
-mod_characters_editor_desc = Editor of the game's characters — heroes, NPCs and enemies: a searchable list with portraits, the name in every language of the mod, portrait, the RPG map charset, battle stats and actions; a save shows in the game at once.
+mod_characters_editor_name = Characters Editor
+mod_characters_editor_desc = Edits a mod's characters while the game runs: names in every language, portrait, RPG walking sprite, battle numbers and actions. A save reaches the running game at once.
 tools/characters_editor/title = Characters
 tools/characters_editor/name = Name
 tools/characters_editor/image = Portrait