rebase + refactor sumo link

src/constants.h

@@ -214,6 +214,10 @@ constexpr const char* MOZILLA_VPN_SUMO_URL =
 constexpr const char* SUMO_DNS =
     "https://support.mozilla.org/kb/how-do-i-change-my-dns-settings";
 
+constexpr const char* SUMO_MULTIHOP =
+    "https://support.mozilla.org/kb/"
+    "multi-hop-encrypt-your-data-twice-enhanced-security";
+
 PRODBETAEXPR(QString, contactSupportUrl, "https://accounts.firefox.com/support",
              "https://accounts.stage.mozaws.net/support")
 

src/mozillavpn.cpp

@@ -1385,10 +1385,8 @@ void MozillaVPN::registerUrlOpenerLabels() {
   uo->registerUrlLabel("sumoDns",
                        []() -> QString { return Constants::SUMO_DNS; });
 
-  uo->registerUrlLabel("sumoMultihop", []() -> QString {
-    return "https://support.mozilla.org/en-US/kb/"
-           "multi-hop-encrypt-your-data-twice-enhanced-security";
-  });
+  uo->registerUrlLabel("sumoMultihop",
+                       []() -> QString { return Constants::SUMO_MULTIHOP; });
 }
 
 void MozillaVPN::errorHandled() {

src/translations/strings.yaml

@@ -953,6 +953,19 @@ devices:
     value: My devices
     comment: Title for the menu bar when viewing the devices or device limit pages
 
+helpSheets: 
+  dnsTitle:
+    value: Custom DNS settings
+    comment: Title label for the custom dns help sheet
+  dnsHeader: 
+    value: What is a custom DNS?
+    comment: Header label for the custom dns help sheet
+  dnsBody1:
+    value: Whenever you connect to a website, a DNS (domain name system) first turns the domain name (e.g. www.mozilla.org) into an IP address that allows your internet traffic to reach that destination.
+    comment: Body text for the custom dns help sheet
+  dnsBody2:
+    value: Mozilla VPN allows you to choose a custom DNS server if you prefer. If you use one, you won’t be able to use other privacy features in the VPN like tracker blocking.
+    comment: Body text for the custom dns help sheet
   locationTitle:
     value: Location selection
     comment: Title label for the location selection help sheet