Bug 602896 - Change Sync account label [r=mbrubeck]

mobile/chrome/content/browser.xul

@@ -443,7 +443,7 @@
                 </setting>
 #ifdef MOZ_SERVICES_SYNC
                 <settings id="prefs-sync" label="&sync.title;">
-                  <setting id="sync-account" type="string" title="&sync.account;"/>
+                  <setting id="sync-account" type="string" title="&sync.account2;"/>
                   <setting id="sync-pass" type="string" inputtype="password" title="&sync.password;"/>
                   <setting id="sync-secret" type="string" inputtype="string" title="&sync.syncKey;"/>
                   <setting id="sync-device" type="string" title="&sync.deviceName;" onchange="WeaveGlue.changeName(this);" collapsed="true"/>

mobile/locales/en-US/chrome/preferences.dtd

@@ -19,7 +19,7 @@
 <!ENTITY homepage.default                          "&brandShortName; Start">
 <!ENTITY homepage.currentpage                      "Use Current Page">
 <!ENTITY sync.title                                "Sync">
-<!ENTITY sync.account                              "Username/Email">
+<!ENTITY sync.account2                             "Account Name">
 <!ENTITY sync.password                             "Password">
 <!ENTITY sync.syncKey                              "Sync Key">
 <!ENTITY sync.deviceName                           "Device Name">