Improved layout for downloads in image gallery

res/layout/file_download_fragment.xml

@@ -18,14 +18,19 @@
 -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 	android:layout_width="match_parent"
-	android:layout_height="wrap_content"
-	android:orientation="vertical" >
+	android:layout_height="match_parent"
+	android:orientation="vertical" 
+	android:layout_gravity="center"
+	android:gravity="center_vertical"
+	android:padding="20dp"
+	>
 	
 	<TextView 
 	    android:id="@+id/progressText" 
 	    android:layout_width="match_parent"
 		android:layout_height="wrap_content" 
 		android:text="@string/downloader_not_downloaded_yet"
+		android:layout_marginBottom="15dp"
 	/>
 	
 	<ProgressBar android:id="@+id/progressBar"
@@ -34,6 +39,7 @@
 		android:progressDrawable="@android:drawable/progress_horizontal"
 		android:indeterminate="false" 
 		android:indeterminateOnly="false" 
+		android:layout_marginBottom="15dp"
 	/>
 	
 	<Button

src/com/owncloud/android/ui/preview/FileDownloadFragment.java

@@ -42,7 +42,6 @@ import com.owncloud.android.datamodel.OCFile;
 import com.owncloud.android.files.services.FileDownloader;
 import com.owncloud.android.files.services.FileDownloader.FileDownloaderBinder;
 import com.owncloud.android.ui.fragment.FileFragment;
-import com.owncloud.android.ui.fragment.FileFragment.ContainerActivity;
 
 import com.owncloud.android.R;
 

src/com/owncloud/android/ui/preview/PreviewImageFragment.java

@@ -58,8 +58,6 @@ import com.owncloud.android.operations.RemoteOperationResult;
 import com.owncloud.android.operations.RemoveFileOperation;
 import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
 import com.owncloud.android.ui.fragment.FileFragment;
-import com.owncloud.android.ui.fragment.ConfirmationDialogFragment.ConfirmationDialogFragmentListener;
-import com.owncloud.android.ui.fragment.FileFragment.ContainerActivity;
 
 import com.owncloud.android.R;
 import eu.alefzero.webdav.WebdavClient;