Add calendar to wesnoth encyclopedia

data/core/encyclopedia/_main.cfg

@@ -3,7 +3,7 @@
 [section]
     id=encyclopedia
     title= _ "Encyclopedia"
-    sections=geography
+    sections=calendar,geography
     topics=..encyclopedia
 [/section]
 
@@ -11,7 +11,9 @@
     id=..encyclopedia
     title= _ "Encyclopedia"
     #generator="contents:encyclopedia"
-    text= _ "<ref>dst='..geography' text='Geography'</ref>"
+    text= _ "<ref>dst='..calendar' text='Calendar'</ref>
+<ref>dst='..geography' text='Geography'</ref>"
 [/topic]
 
+{./calendar.cfg}
 {./geography.cfg}

data/core/encyclopedia/calendar.cfg

@@ -0,0 +1,30 @@
+#textdomain wesnoth-help
+
+[section]
+    id=calendar
+    title= _ "Calendar"
+    topics=..calendar
+    sort_topics=yes
+[/section]
+
+[topic]
+    id=..calendar
+    title= _ "Calendar"
+    text= _ "Each year in the Wesnoth calendar is composed of 12 months. These are, in order:
+
+Whitefire
+Bleeding Moon
+Scatterseed
+Deeproot
+Scryer’s Bloom
+Thorntress
+Summit Star
+Kindlefire
+Stillseed
+Reaper’s Moon
+Verglas Bloom
+Blackfire
+
+"
+    generator="contents:calendar"
+[/topic]