search view using AppCompat implementation + layout optimizations

res/layout/search_users_groups_layout.xml

@@ -21,18 +21,23 @@
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:id="@+id/search_layout"
-    android:minWidth="200dp">
+    android:minWidth="200dp"
+    android:layout_marginRight="@dimen/standard_margin"
+    android:layout_marginBottom="20dp">
 
-    <SearchView
+    <android.support.v7.widget.SearchView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:id="@+id/searchView"
-        android:hint="@string/share_search"/>
+        android:hint="@string/share_search"
+        style="@style/ownCloud.SearchView"/>
 
     <ListView
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:id="@+id/searchUsersListView"
-        android:scrollbars="vertical"/>
+        android:scrollbars="vertical"
+        android:layout_marginLeft="20dp"
+        android:layout_marginRight="@dimen/standard_half_margin"/>
 
 </LinearLayout>

src/com/owncloud/android/ui/fragment/SearchShareesFragment.java

@@ -27,13 +27,13 @@ import android.app.SearchManager;
 import android.content.Context;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
+import android.support.v7.widget.SearchView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.ListView;
-import android.widget.SearchView;
 
 import com.owncloud.android.R;
 import com.owncloud.android.datamodel.OCFile;