followup patch to bug 346795 that changes "browsing" to "working" in a string since updater isn't browser-specific

Patch by Mike Beltzner.
r=myk

toolkit/locales/en-US/chrome/mozapps/update/updates.dtd

@@ -64,8 +64,8 @@
 <!ENTITY  finishedBackground.text         "&brandShortName; has downloaded and verified an important update. 
                                            Click the link below for more details.">
 <!ENTITY  finishedBackground.name         "Update:">
-<!ENTITY  finishedBackground.detail1      "Click Restart &brandShortName; Now to install the update now.">
+<!ENTITY  finishedBackground.more1        "Click Restart &brandShortName; Now to install the update now.">
-<!ENTITY  finishedBackground.detail2      "Click Later to close this dialog and continue browsing. &brandShortName;
+<!ENTITY  finishedBackground.more2        "Click Later to close this dialog and continue working. &brandShortName;
                                            will install the update the next time it starts.">
 
 <!ENTITY  installed.title                 "Update Installed">

toolkit/mozapps/update/content/updates.xul

@@ -186,9 +186,9 @@
       <label id="finishedBackgroundLink" class="text-link" value="&details.link;"/>
     </hbox>
     <spacer flex="1"/>
-    <label>&finishedBackground.detail1;</label>
+    <label>&finishedBackground.more1;</label>
     <separator class="thin"/>
-    <label>&finishedBackground.detail2;</label>
+    <label>&finishedBackground.more2;</label>
   </wizardpage>
   
   <wizardpage id="installed" pageid="installed"