fixed targetmode being included in project

app/assets/javascripts/ide/ide_router.js

@@ -36,11 +36,11 @@ const router = new VueRouter({
   base: `${gon.relative_url_root}/-/ide/`,
   routes: [
     {
-      path: '/project/:namespace/:project*',
+      path: '/project/:namespace/:project+',
       component: EmptyRouterComponent,
       children: [
         {
-          path: ':targetmode/:branch/*',
+          path: ':targetmode(edit|tree|blob)/:branch/*',
           component: EmptyRouterComponent,
         },
         {