notebookbar: add select background for impress

Change-Id: Icfc511b8da029fee4f4f773c5900e2452808fb59
Signed-off-by: Szymon Kłos <szymon.klos@collabora.com>

loleaflet/images/lc_selectbackground.svg

@@ -0,0 +1 @@
+<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path d="m5 3v18l5-5 2 2 7-6v-9z" fill="#fff"/><circle cx="9.5" cy="7.5" fill="#eac282" r="2.5"/><path d="m19 12-7 6-2-2-5 5h14z" fill="#4d82b8"/><path d="m5 2c-.554 0-1 .446-1 1v18c0 .554.446 1 1 1h14c.554 0 1-.446 1-1v-18c0-.554-.446-1-1-1zm0 1h14v18h-14z" fill="#808080"/></svg>

loleaflet/src/control/Control.NotebookbarImpress.js

@@ -2364,6 +2364,29 @@ L.Control.NotebookbarImpress = L.Control.NotebookbarWriter.extend({
 																				}
 																			],
 																			'vertical': 'false'
+																		},
+																		{
+																			'id': 'Insert-Section-Background',
+																			'type': 'container',
+																			'text': '',
+																			'enabled': 'true',
+																			'children': [
+																				{
+																					'id': 'Section2',
+																					'type': 'toolbox',
+																					'text': '',
+																					'enabled': 'true',
+																					'children': [
+																						{
+																							'id': 'selectbackground',
+																							'type': 'menubartoolitem',
+																							'text': _UNO('.uno:SelectBackground', 'presentation'),
+																							'command': ''
+																						}
+																					]
+																				}
+																			],
+																			'vertical': 'false'
 																		}
 																	],
 																	'vertical': 'false'