Label stream audio controls in English and Russian

tools/chatgui/translations/chatgui_en.ts

@@ -36,7 +36,8 @@
     <message><source>Audio input</source><translation>Audio input</translation></message>
     <message><source>Stereo</source><translation>Stereo</translation></message>
     <message><source>Mono</source><translation>Mono</translation></message>
-    <message><source>Mute microphone</source><translation>Mute microphone</translation></message>
+    <message><source>Mute stream audio</source><translation>Mute stream audio</translation></message>
+    <message><source>Could not change stream audio</source><translation>Could not change stream audio</translation></message>
     <message><source>Start stream</source><translation>Start stream</translation></message>
     <message><source>Stop stream</source><translation>Stop stream</translation></message>
     <message><source>Starting stream…</source><translation>Starting stream…</translation></message>

tools/chatgui/translations/chatgui_ru.ts

@@ -36,7 +36,8 @@
     <message><source>Audio input</source><translation>Входящий звук</translation></message>
     <message><source>Stereo</source><translation>Стерео</translation></message>
     <message><source>Mono</source><translation>Моно</translation></message>
-    <message><source>Mute microphone</source><translation>Выключить звук микрофона</translation></message>
+    <message><source>Mute stream audio</source><translation>Выключить звук трансляции</translation></message>
+    <message><source>Could not change stream audio</source><translation>Не удалось переключить звук трансляции</translation></message>
     <message><source>Start stream</source><translation>Начать трансляцию</translation></message>
     <message><source>Stop stream</source><translation>Остановить трансляцию</translation></message>
     <message><source>Starting stream…</source><translation>Запуск трансляции…</translation></message>