Change Identity to Safety Numbers in conversation menu

Fixes #935

_locales/en/messages.json

@@ -124,6 +124,9 @@
     "verifyIdentity": {
         "message": "Verify Identity"
     },
+    "verifySafetyNumbers": {
+        "message": "Verify Safety Numbers"
+    },
     "theirIdentity": {
         "message": "Their identity",
         "description": "Label for someone else's identity key. They is used here as a gender-neutral third-person singular."

js/views/conversation_view.js

@@ -66,7 +66,7 @@
                 expireTimer: this.model.get('expireTimer'),
                 'view-members'    : i18n('members'),
                 'end-session'     : i18n('resetSession'),
-                'verify-identity' : i18n('verifyIdentity'),
+                'verify-identity' : i18n('verifySafetyNumbers'),
                 'destroy'         : i18n('deleteMessages'),
                 'send-message'    : i18n('sendMessage'),
                 'disappearing-messages': i18n('disappearingMessages'),