provide a register button on login

also direct users from file to login

customize.dist/main.css

@@ -875,6 +875,12 @@ html.cp,
 .cp #main_other #main-container {
   display: inline-block;
 }
+.cp #main #userForm .extra p,
+.cp #main_other #userForm .extra p {
+  font-size: 28px;
+  padding: 15px;
+  text-align: center;
+}
 .cp #main #data,
 .cp #main_other #data {
   width: 600px;

customize.dist/src/less/cryptpad.less

@@ -337,6 +337,14 @@ noscript {
         display: inline-block;
     }
 
+    #userForm .extra {
+        p {
+            font-size: 28px;
+            padding: 15px;
+            text-align: center;
+        }
+    }
+
     #data {
         p {
             margin: 0;

customize.dist/translations/messages.js

@@ -302,6 +302,9 @@ define(function () {
     out.login_invalPass = 'Password required';
     out.login_unhandledError = 'An unexpected error occurred :(';
 
+    out.login_notRegistered = 'Not registered?';
+
+
     out.register_importRecent = "Import pad history (Recommended)";
     out.register_acceptTerms = "I accept <a href='/terms.html'>the terms of service</a>";
     out.register_passwordsDontMatch = "Passwords do not match!";
@@ -375,6 +378,7 @@ define(function () {
     out.upload_name = "File name";
     out.upload_size = "Size";
     out.upload_progress = "Progress";
+    out.upload_mustLogin = "You must be logged in to upload files";
     out.download_button = "Decrypt & Download";
 
     // general warnings