tdf#122572: Use the _UNO() function instead of duplicating what it does

Change-Id: I54f7f49c2b4b82c3b8450b4475c2ea1267125df5
diff --git a/loleaflet/src/control/Control.ContextToolbar.js b/loleaflet/src/control/Control.ContextToolbar.js
index 139636d..60dec30 100644
--- a/loleaflet/src/control/Control.ContextToolbar.js
+++ b/loleaflet/src/control/Control.ContextToolbar.js
@@ -2,7 +2,7 @@
/*
 * L.Control.ContextToolbar.
 */
/* global _ */
/* global _UNO */

L.Control.ContextToolbar = L.Control.extend({
	options: {
@@ -55,15 +55,11 @@ L.Control.ContextToolbar = L.Control.extend({
		if (window.ThisIsTheiOSApp) {
			this._leftroundedend = L.DomUtil.create(tagTd, 'loleaflet-ios-context-button loleaflet-ios-context-left', tr);
			this._cut = L.DomUtil.create(tagTd, 'loleaflet-ios-context-button loleaflet-ios-context-first-and-middle-entry loleaflet-ios-context-cut', tr);
			// We have at the moment no translations for the bare words "Cut", "Copy",
			// and "Paste". Only for the menu entries that start with a tilde. So let's
			// do a horrible hack: Look up those and remove the tilde from the
			// translation.
			this._cut.innerHTML = _('~Cut').replace(/~/, '');
			this._cut.innerHTML = _UNO('.uno:Cut');
			this._copy = L.DomUtil.create(tagTd, 'loleaflet-ios-context-button loleaflet-ios-context-first-and-middle-entry loleaflet-ios-context-copy', tr);
			this._copy.innerHTML = _('~Copy').replace(/~/, '');
			this._copy.innerHTML = _UNO('.uno:Copy');
			this._paste = L.DomUtil.create(tagTd, 'loleaflet-ios-context-button loleaflet-ios-context-last-entry loleaflet-ios-context-paste', tr);
			this._paste.innerHTML = _('~Paste').replace(/~/, '');
			this._paste.innerHTML = _UNO('.uno:Paste');
			this._rightroundedend = L.DomUtil.create(tagTd, 'loleaflet-ios-context-button loleaflet-ios-context-right', tr);
		}
		else {