Restore the original scaled-down portrait versions...

...for the campaign menu images used in EI, LoW and SotBE (per Kitty's
request).

data/campaigns/Eastern_Invasion/_main.cfg

@@ -19,7 +19,7 @@
     description= _ "There are rumors of undead attacks on the eastern border of Wesnoth. You, an officer in the Royal Army, have been sent to the eastern front to protect the villagers and find out what is happening.
 
 (Intermediate level, 18 scenarios.)"
-    image="data/campaigns/Eastern_Invasion/images/portraits/gweddry.png~SCALE(205,205)"
+    image="data/campaigns/Eastern_Invasion/images/campaign_image.png"
 
     [about]
         title = _ "Campaign Design"

data/campaigns/Legend_of_Wesmere/_main.cfg

@@ -41,7 +41,7 @@
     difficulties=EASY,NORMAL,HARD
 
     icon="units/elves-wood/high-lord.png~RC(magenta>brown)"
-    image="data/campaigns/Legend_of_Wesmere/images/portraits/kalenz.png~SCALE(205,205)"
+    image="data/campaigns/Legend_of_Wesmere/images/campaign_image.png"
     first_scenario="01_The_Uprooting"
     difficulties=EASY,NORMAL,HARD
 

data/campaigns/Son_Of_The_Black_Eye/_main.cfg

@@ -21,7 +21,7 @@
 
 (Expert level, 18 scenarios.)"
     icon=units/orcs/ruler.png~RC(magenta>red)
-    image=data/campaigns/Son_Of_The_Black_Eye/images/portraits/kapoue.png~SCALE(205,205)
+    image=data/campaigns/Son_Of_The_Black_Eye/images/campaign_image.png
 
     [about]
         title = _ "Campaign Design"