Search by mail on the board sharing input

Signed-off-by: Julius Härtl <jus@bitgrid.net>

src/store/main.js

@@ -416,7 +416,7 @@ export default new Vuex.Store({
 			params.append('search', query)
 			params.append('format', 'json')
 			params.append('perPage', 20)
-			params.append('itemType', [0, 1, 7])
+			params.append('itemType', [0, 1, 4, 7])
 
 			const response = await axios.get(generateOcsUrl('apps/files_sharing/api/v1') + 'sharees', { params })
 			commit('setSharees', response.data.ocs.data)