fix visibility

src/com/owncloud/android/authentication/AccountAuthenticator.java

@@ -50,10 +50,10 @@ public class AccountAuthenticator extends AbstractAccountAuthenticator {
      * Is used by android system to assign accounts to authenticators.
      * Should be used by application and all extensions.
      */
-    private static final String KEY_AUTH_TOKEN_TYPE = "authTokenType";
-    private static final String KEY_REQUIRED_FEATURES = "requiredFeatures";
-    private static final String KEY_LOGIN_OPTIONS = "loginOptions";
-    private static final String KEY_ACCOUNT = "account";
+    public static final String KEY_AUTH_TOKEN_TYPE = "authTokenType";
+    public static final String KEY_REQUIRED_FEATURES = "requiredFeatures";
+    public static final String KEY_LOGIN_OPTIONS = "loginOptions";
+    public static final String KEY_ACCOUNT = "account";
     
     private static final String TAG = AccountAuthenticator.class.getSimpleName();