New media permission, show dialog when not enabled for voice msg

UI now in separate renderer:
  - the permissions popup
  - settings dialog
  - debug log dialog
  - about window

Couple bug fixes:
  - About Window: Fix 'escape' to close window
  - Remove outdated dist/copy tasks from Gruntfile

Eslintified settings_view.js

js/debug_log_start.js

@@ -0,0 +1,13 @@
+$(document).on('keyup', function(e) {
+  if (e.keyCode === 27) {
+    window.closeDebugLog();
+  }
+});
+
+const $body = $(document.body);
+
+// got.js appears to need this to successfully submit debug logs to the cloud
+window.setImmediate = window.nodeSetImmediate;
+
+window.view = new Whisper.DebugLogView();
+window.view.$el.appendTo($body);