Fix button spinning after failed CAPTCHA.

src/org/thoughtcrime/securesms/RegistrationActivity.java

@@ -198,6 +198,8 @@ public class RegistrationActivity extends BaseActionBarActivity implements Verif
       }
     } else if (requestCode == CAPTCHA) {
       Toast.makeText(this, R.string.RegistrationActivity_failed_to_verify_the_captcha, Toast.LENGTH_LONG).show();
+      createButton.setIndeterminateProgressMode(false);
+      createButton.setProgress(0);
     }
   }
 

src/org/thoughtcrime/securesms/registration/CaptchaActivity.java

@@ -47,7 +47,7 @@ public class CaptchaActivity extends BaseActionBarActivity {
       }
     });
 
-    webView.loadUrl("https://signalcaptchas.org/registration/generate.html\n");
+    webView.loadUrl("https://signalcaptchas.org/registration/generate.html");
   }
 
   public void handleToken(String token) {