EXT-2647: Removed the help browser's "Open in My Web Browser" button.

Also increased the default height of the help browser a little bit as
it looked a little too squat.

indra/newview/skins/default/xui/en/floater_help_browser.xml

@@ -2,7 +2,7 @@
 <floater
  legacy_header_height="18"
  can_resize="true"
- height="400"
+ height="480"
  layout="topleft"
  min_height="140"
  min_width="467"
@@ -21,7 +21,7 @@
         http://support.secondlife.com
     </floater.string>
     <layout_stack
-     bottom="400"
+     bottom="480"
      follows="left|right|top|bottom"
      layout="topleft"
      left="10"
@@ -29,42 +29,22 @@
      top="20"
      width="600">
         <layout_panel
-         height="20"
+         height="1"
          layout="topleft"
          left_delta="0"
          name="external_controls"
          top_delta="0"
          user_resize="false"
-         width="570">
+         width="590">
             <web_browser
-             bottom="-10"
+             bottom="-4"
              follows="left|right|top|bottom"
              layout="topleft"
              left="0"
              name="browser"
              top="0"
              start_url="data:text/html,%3Chtml%3E%3Cbody bgcolor=%22#2A2A2A%22%3E%3C/body%3E%3C/html%3E"
-             width="570" />
-            <button
-             follows="bottom|left"
-             height="20"
-             label="Open in My Web Browser"
-             layout="topleft"
-             left_delta="0"
-             name="open_browser"
-             top_pad="5"
-             width="185" />
-<!--
-            <button
-             follows="bottom|right"
-             height="20"
-             label="Close"
-             layout="topleft"
-             left_pad="290"
-             name="close"
-             top_delta="0"
-             width="70" />
--->
+             width="590" />
         </layout_panel>
     </layout_stack>
 </floater>