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  - Remove outdated dist/copy tasks from Gruntfile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/about_start.js

@@ -0,0 +1,24 @@
+// Add version
+$('.version').text(`v${window.getVersion()}`);
+
+// Add debugging metadata - environment if not production, app instance name
+const states = [];
+
+if (window.getEnvironment() !== 'production') {
+  states.push(window.getEnvironment());
+}
+if (window.getAppInstance()) {
+  states.push(window.getAppInstance());
+}
+
+$('.environment').text(states.join(' - '));
+
+// Install the 'dismiss with escape key' handler
+$(document).on('keyup', function(e) {
+  if (e.keyCode === 27) {
+    window.closeAbout();
+  }
+});
+
+// Localize the privacy string
+$('.privacy').text(window.i18n('privacyPolicy'));