add 'Scroll to the end of the conversation' bar

Change-Id: I63e41433db4999d021bc13375cf5b7ba07843c3d
diff --git a/client/src/locale/en/translation_old.json b/client/src/locale/en/translation_old.json
new file mode 100644
index 0000000..a1a3e9a
--- /dev/null
+++ b/client/src/locale/en/translation_old.json
@@ -0,0 +1,15 @@
+{
+  "password_input_default_helper_text": "",
+  "password_input_medium_helper_text": "Medium",
+  "password_input_registration_failed_helper_text": "Choose another password!",
+  "password_input_strong_helper_text": "Strong",
+  "password_input_too_weak_helper_text": "Too weak",
+  "password_input_weak_helper_text": "Weak",
+  "severity_error": "Error",
+  "severity_success": "Success",
+  "username_input_default_helper_text": "",
+  "username_input_invalid_helper_text": "Username doesn't follow required pattern",
+  "username_input_registration_failed_helper_text": "Username not correct!",
+  "username_input_success_helper_text": "Username available",
+  "username_input_taken_helper_text": "Username already taken"
+}