Extend developer view with media debug information (#909)

* interceptor: add MediaStream feed debug interceptor

- interceptor displays nick name for default and nick name + user id if user gast
- interceptor displays track id  + media stream ids

public/locales/en-GB/app.json

@@ -68,6 +68,7 @@
   "Logging in…": "Logging in…",
   "Login": "Login",
   "Login to your account": "Login to your account",
+  "Media Feeds": "Media Feeds",
   "Microphone": "Microphone",
   "Microphone {{n}}": "Microphone {{n}}",
   "Microphone permissions needed to join the call.": "Microphone permissions needed to join the call.",
@@ -75,6 +76,7 @@
   "More menu": "More menu",
   "Mute microphone": "Mute microphone",
   "No": "No",
+  "No Feeds…": "No Feeds…",
   "Not now, return to home screen": "Not now, return to home screen",
   "Not registered yet? <2>Create an account</2>": "Not registered yet? <2>Create an account</2>",
   "Other users are trying to join this call from incompatible versions. These users should ensure that they have refreshed their browsers:<1>{userLis}</1>": "Other users are trying to join this call from incompatible versions. These users should ensure that they have refreshed their browsers:<1>{userLis}</1>",
@@ -95,13 +97,13 @@
   "Return to home screen": "Return to home screen",
   "Save": "Save",
   "Saving…": "Saving…",
+  "Screen Share Feeds": "Screen Share Feeds",
   "Select an option": "Select an option",
   "Send debug logs": "Send debug logs",
   "Sending debug logs…": "Sending debug logs…",
   "Sending…": "Sending…",
   "Settings": "Settings",
   "Share screen": "Share screen",
-  "Show call feed debug info": "Show call feed debug info",
   "Show call inspector": "Show call inspector",
   "Sign in": "Sign in",
   "Sign out": "Sign out",