replaced Flickr and Twitter FUI icons for ACME-1181

indra/newview/app_settings/commands.xml

@@ -228,7 +228,7 @@
            />
   <command name="flickr"
            available_in_toybox="true"
-           icon="Command_Social_Icon"
+           icon="Command_Flickr_Icon"
            label_ref="Command_Flickr_Label"
            tooltip_ref="Command_Flickr_Tooltip"
            execute_function="Floater.ToggleOrBringToFront"
@@ -238,7 +238,7 @@
            />
   <command name="twitter"
            available_in_toybox="true"
-           icon="Command_Social_Icon"
+           icon="Command_Twitter_Icon"
            label_ref="Command_Twitter_Label"
            tooltip_ref="Command_Twitter_Tooltip"
            execute_function="Floater.ToggleOrBringToFront"

indra/newview/skins/default/textures/textures.xml

@@ -149,6 +149,8 @@ with the same filename but different name
   <texture name="Command_Profile_Icon"      file_name="toolbar_icons/profile.png"      preload="true" />
   <texture name="Command_Search_Icon"       file_name="toolbar_icons/search.png"       preload="true" />
   <texture name="Command_Social_Icon"       file_name="toolbar_icons/facebook.png"     preload="true" />
+  <texture name="Command_Flickr_Icon"       file_name="toolbar_icons/flickr.png"     preload="true" />
+  <texture name="Command_Twitter_Icon"      file_name="toolbar_icons/twitter.png"     preload="true" />
   <texture name="Command_Snapshot_Icon"     file_name="toolbar_icons/snapshot.png"     preload="true" />
   <texture name="Command_Speak_Icon"        file_name="toolbar_icons/speak.png"        preload="true" />
   <texture name="Command_View_Icon"         file_name="toolbar_icons/view.png"         preload="true" />