moved everything to AppCompatActivity since ActionBarActivity is deprecated

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

@@ -19,7 +19,6 @@ package com.owncloud.android.authentication;
 import android.accounts.AccountAuthenticatorResponse;
 import android.accounts.AccountManager;
 import android.os.Bundle;
-import android.support.v7.app.ActionBarActivity;
 import android.support.v7.app.AppCompatActivity;
 
 /*

src/com/owncloud/android/ui/activity/ErrorsWhileCopyingHandlerActivity.java

@@ -30,7 +30,7 @@ import android.os.AsyncTask;
 import android.os.Bundle;
 import android.os.Handler;
 import android.support.v4.app.DialogFragment;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.text.method.ScrollingMovementMethod;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -61,7 +61,7 @@ import com.owncloud.android.utils.FileStorageUtils;
  * 
  * Shown when the error notification summarizing the list of errors is clicked by the user.
  */
-public class ErrorsWhileCopyingHandlerActivity  extends ActionBarActivity
+public class ErrorsWhileCopyingHandlerActivity  extends AppCompatActivity
         implements OnClickListener {
 
     private static final String TAG = ErrorsWhileCopyingHandlerActivity.class.getSimpleName();

src/com/owncloud/android/ui/activity/GenericExplanationActivity.java

@@ -25,8 +25,7 @@ import java.util.ArrayList;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.text.method.ScrollingMovementMethod;
 import android.view.View;
 import android.view.ViewGroup;
@@ -45,7 +44,7 @@ import com.owncloud.android.utils.DisplayUtils;
  * Added to show explanations for notifications when the user clicks on them, and there no place
  * better to show them.
  */
-public class GenericExplanationActivity  extends ActionBarActivity {
+public class GenericExplanationActivity  extends AppCompatActivity {
 
     public static final String EXTRA_LIST = GenericExplanationActivity.class.getCanonicalName() +
             ".EXTRA_LIST";

src/com/owncloud/android/ui/activity/LogHistoryActivity.java

@@ -35,8 +35,7 @@ import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentTransaction;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -51,7 +50,7 @@ import com.owncloud.android.utils.DisplayUtils;
 import com.owncloud.android.utils.FileStorageUtils;
 
 
-public class LogHistoryActivity extends ActionBarActivity {
+public class LogHistoryActivity extends AppCompatActivity {
 
     private static final String MAIL_ATTACHMENT_TYPE = "text/plain";
 

src/com/owncloud/android/ui/activity/PassCodeActivity.java

@@ -27,8 +27,7 @@ import java.util.Arrays;
 import android.content.SharedPreferences;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
-import android.support.v7.app.ActionBar;
-import android.support.v7.app.ActionBarActivity;
+import android.support.v7.app.AppCompatActivity;
 import android.text.Editable;
 import android.text.TextWatcher;
 import android.view.KeyEvent;
@@ -41,10 +40,8 @@ import android.widget.Toast;
 
 import com.owncloud.android.R;
 import com.owncloud.android.lib.common.utils.Log_OC;
-import com.owncloud.android.utils.DisplayUtils;
-
-public class PassCodeActivity extends ActionBarActivity {
 
+public class PassCodeActivity extends AppCompatActivity {
 
     private static final String TAG = PassCodeActivity.class.getSimpleName();
 
@@ -537,5 +534,4 @@ public class PassCodeActivity extends ActionBarActivity {
 
     }
 
-
 }