Update Potlatch 2 to r24558 build

public/potlatch2/map_features.xml

@@ -831,7 +831,7 @@ Quick documentation:
     <inputSet ref="common"/>
   </feature>
 
-  <feature name="Pedestrian Street">
+  <feature name="Pedestrian street">
     <category>paths</category>
     <icon image="features/paths__pedestrian.png">
       <font size="14pt">
@@ -1043,7 +1043,7 @@ Quick documentation:
 
   <feature name="Drain">
     <category>water</category>
-    <icon image="features/pois/water_generic.24.png">
+    <icon image="features/waterway__drain.png">
       <font size="14pt"><b>${name}</b></font>
     </icon>
 
@@ -1129,7 +1129,7 @@ Quick documentation:
 
   <feature name="Weir">
     <category>water</category>
-    <icon image="features/pois/water_generic.24.png">
+    <icon image="features/waterway__weir.png">
       <font size="14pt">
         <b>${name}</b>
       </font>
@@ -1177,7 +1177,7 @@ Quick documentation:
 
   <feature name="Slipway">
     <category>water</category>
-    <icon image="features/pois/water_generic.24.png"/>
+    <icon image="features/waterway__slipway.png" />
     <line/>
     <tag k="leisure" v="slipway"/>
     <inputSet ref="names"/>