Support multigraph for algorithms:

- Find all paths.
- Find longest path.
- Find all shortest paths.

tpl/home.php

@@ -990,6 +990,7 @@
 
     <p id="findAllShortestPathes" class="translation"><?= L('find_all_shortest_pathes')?></p>
     <p id="numberOfShortestPathesFrom" class="translation"><?= L('number_of_shortest_pathes_from')?></p>
+    <p id="lengthIs" class="translation"><?= L('length_is')?></p>
 </section>
 
 <script src="<?= RootCacheJS("script/pages/editor/api/index.js")?>" ></script>