Change certificate checking.

ui/src/main/java/com/getbubblenow/android/repository/DataRepository.java

@@ -562,7 +562,7 @@ public class DataRepository {
     public boolean isHaveCertificate(Context context){
         final List<String> certificates = getAllCertificates(context);
         for (final String certificate:certificates) {
-            if(certificate.contains("="+hostname)) {
+            if(certificate.contains("."+hostname)) {
                 return true;
             }
         }