Bug 1508712 - New strings for the trackers dropdown menulist. r=flod

Differential Revision: https://phabricator.services.mozilla.com/D12674

--HG--
extra : moz-landing-system : lando

browser/components/preferences/in-content/privacy.xul

@@ -138,7 +138,7 @@
                     <menulist id="trackingProtectionMenu">
                       <menupopup>
                         <menuitem data-l10n-id="content-blocking-tracking-protection-option-private" value="private"/>
-                        <menuitem data-l10n-id="content-blocking-tracking-protection-option-always" value="always"/>
+                        <menuitem data-l10n-id="content-blocking-tracking-protection-option-all-windows" value="always"/>
                       </menupopup>
                     </menulist>
                   </vbox>

browser/locales/en-US/browser/preferences/preferences.ftl

@@ -846,11 +846,11 @@ content-blocking-tracking-protection-trackers-label =
 content-blocking-tracking-protection-all-detected-trackers-label =
   .label = All Detected Trackers
   .accesskey = T
-content-blocking-tracking-protection-option-always =
+content-blocking-tracking-protection-option-all-windows =
-  .label = Always
+  .label = In all windows
   .accesskey = A
 content-blocking-tracking-protection-option-private =
-  .label = Only in private windows
+  .label = Only in Private Windows
   .accesskey = p
 content-blocking-tracking-protection-change-block-list = Change block list