fixup help pages for units, only one sprite (as usual)

Only show one sprite, not all the scaled samples.
Only show ~xBRZ(2), not the straight baseframe.

src/help.cpp

@@ -1638,27 +1638,16 @@ class unit_topic_generator: public topic_generator
 
 		// Show the unit's image and its level.
 #ifdef LOW_MEM
-		ss << "<img>src='" << male_type.image() << "'</img> ";
+		ss << "<img>src='" << male_type.image() << "~xBRZ(2)'</img> ";
 #else
-		ss << "<img>src='" << male_type.image() << "~RC(" << male_type.flag_rgb() << ">1)" << "'</img> ";
-		ss << "<img>src='" << male_type.image() << "~RC(" << male_type.flag_rgb() << ">1)~SCALE(144,144)" << "'</img> ";
 		ss << "<img>src='" << male_type.image() << "~RC(" << male_type.flag_rgb() << ">1)~xBRZ(2)" << "'</img> ";
-		ss << "<img>src='" << male_type.image() << "~RC(" << male_type.flag_rgb() << ">1)~SCALE(216,216)" << "'</img> ";
-		ss << "<img>src='" << male_type.image() << "~RC(" << male_type.flag_rgb() << ">1)~xBRZ(3)" << "'</img> ";
-		ss << "<img>src='" << male_type.image() << "~RC(" << male_type.flag_rgb() << ">1)~SCALE(288,288)" << "'</img> ";
-		ss << "<img>src='" << male_type.image() << "~RC(" << male_type.flag_rgb() << ">1)~xBRZ(4)" << "'</img> ";
-		ss << "<img>src='" << male_type.image() << "~RC(" << male_type.flag_rgb() << ">1)~xBRZ(5)" << "'</img> ";
 #endif
 
 		if (&female_type != &male_type)
 #ifdef LOW_MEM
-			ss << "<img>src='" << female_type.image() << "'</img> ";
+			ss << "<img>src='" << female_type.image() << "~xBRZ(2)'</img> ";
 #else
-			ss << "<img>src='" << female_type.image() << "~RC(" << female_type.flag_rgb() << ">1)" << "'</img> ";
 			ss << "<img>src='" << female_type.image() << "~RC(" << female_type.flag_rgb() << ">1)~xBRZ(2)" << "'</img> ";
-			ss << "<img>src='" << female_type.image() << "~RC(" << female_type.flag_rgb() << ">1)~xBRZ(3)" << "'</img> ";
-			ss << "<img>src='" << female_type.image() << "~RC(" << female_type.flag_rgb() << ">1)~xBRZ(4)" << "'</img> ";
-			ss << "<img>src='" << female_type.image() << "~RC(" << female_type.flag_rgb() << ">1)~xBRZ(5)" << "'</img> ";
 #endif