Added style to buttons in share_file_layout and centered refresh button in account_setup

res/layout-land/account_setup.xml

@@ -65,6 +65,7 @@
 					android:layout_height="wrap_content"
 					android:layout_gravity="center_horizontal"
 					android:layout_marginBottom="10dp"
+					android:theme="@style/Button"
 					android:text="@string/auth_check_server"
 					android:visibility="gone"
 					android:contentDescription="@string/auth_check_server"/>

res/layout/account_setup.xml

@@ -51,6 +51,7 @@
             android:layout_height="wrap_content"
             android:layout_gravity="center_horizontal"
             android:layout_marginBottom="10dp"
+            android:theme="@style/Button"
             android:text="@string/auth_check_server"
             android:visibility="gone"
             android:contentDescription="@string/auth_check_server"/>

res/layout/share_file_layout.xml

@@ -115,6 +115,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_gravity="center_horizontal"
+            android:theme="@style/Button.Primary"
             android:text="@string/share_add_user_or_group"
             android:contentDescription="shareAddUserButton"/>
 
@@ -233,6 +234,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_gravity="center_horizontal"
+            android:theme="@style/Button.Primary"
             android:text="@string/share_get_public_link_button"
             android:contentDescription="shareGetLinkButton"/>