copy: simplify user-facing descriptions

components/forecast/forecast-sources.tsx

@@ -32,7 +32,7 @@ export function ForecastSources({ sources }: { sources: ForecastSource[] }) {
       >
         Open-Meteo <ExternalLink className="size-3" />
       </a>
-      . {t(hasImgw ? "forecast.sourceCombinedDescription" : "forecast.sourceFallbackDescription")}
+      .
     </p>
   );
 }

components/settings/settings-page.tsx

@@ -801,7 +801,9 @@ export function SettingsPage() {
               </Button>
             </div>
 
-            <p className="mt-4 text-xs leading-5 text-muted">{t("settings.notifications.implementationNote")}</p>
+            {t("settings.notifications.implementationNote") && (
+              <p className="mt-4 text-xs leading-5 text-muted">{t("settings.notifications.implementationNote")}</p>
+            )}
           </div>
         </div>
       </Card>