fix bug #184078. localize "All" and "Unread" in message views.

r=mstoltz,sr=dveditz,sspitzer.  thanks to Marek.Wawoczny@GmbH.rubikon.pl for the fix.

mailnews/extensions/mailviews/resources/content/msgViewPickerOverlay.xul

@@ -39,8 +39,8 @@
       <label id="ViewPickerText" value="&ViewPicker.label;" control="viewPicker"  accesskey="&ViewPicker.accesskey;"/>
       <menulist id="viewPicker" oncreate="FillLabelValues();" oncommand="viewChange(this);">
        <menupopup id="viewPickerPopup">
-         <menuitem value="0" label="All" />
-         <menuitem value="1" label="Unread"/>
+         <menuitem value="0" label="&ViewPickerAll.label;"/>
+         <menuitem value="1" label="&ViewPickerUnread.label;"/>
          <menuseparator/>
          <menuitem value="2" id="labelMenuItem1"/>
          <menuitem value="3" id="labelMenuItem2"/>

mailnews/extensions/mailviews/resources/locale/en-US/msgViewPickerOverlay.dtd

@@ -4,4 +4,5 @@
 <!ENTITY ViewPicker.accesskey "i">
 <!ENTITY ViewPickerPeople.label "People I Know">
 <!ENTITY ViewPickerCustomView.label "Customize...">
-
+<!ENTITY ViewPickerAll.label "All">
+<!ENTITY ViewPickerUnread.label "Unread">