add icon aliases from core colibre links.txt

Reuse alias mappings from the core colibre icon theme:
- endnotedialog -> footnotedialog
- updateallindexes -> insertmultiindex
- formatframemenu -> framedialog

Signed-off-by: Andras Timar <andras.timar@collabora.com>
Change-Id: I481bc13689bf4f06e73194e0f7389aebe6b8d893

Author: timar

browser/src/app/LOUtil.ts

@@ -567,6 +567,9 @@ class LOUtil {
 			'exportas-pdf': 'exportpdf',
 			'exportas-epub': 'exportepub',
 			'fullscreen-drawing': 'presentation',
+			endnotedialog: 'footnotedialog',
+			updateallindexes: 'insertmultiindex',
+			formatframemenu: 'framedialog',
 		};
 		if (iconURLAliases[cleanName]) {
 			cleanName = iconURLAliases[cleanName];