use _.escapeRegExp since RegExp.escape seems to be not always there...

SQUASHED: AUTO-COMMIT-src-components-tools-lively-container-navbar.js,AUTO-COMMIT-src-components-tools-lively-index-search.js,

Author: JensLincke

src/components/tools/lively-container-navbar.js

@@ -11,6 +11,8 @@ import Strings from "src/client/strings.js"
 
 import FileIndex from "src/client/fileindex.js"
 import SearchRoots from "src/client/search-roots.js"
+import _ from 'src/external/lodash/lodash.js'
+
 /*MD # Navbar
 
 ![](lively-container-navbar.png){width=300px}
@@ -537,7 +539,7 @@ export default class LivelyContainerNavbar extends Morph {
     if (prefix.length < 4) {
       prefix = ""
     }      
-    link.innerHTML =  icon + title.replace(new RegExp("^" + RegExp.escape(prefix)), "<span class='prefix'>" +prefix +"</span>")
+    link.innerHTML =  icon + title.replace(new RegExp("^" + _.escapeRegExp(prefix)), "<span class='prefix'>" +prefix +"</span>")
     this.lastTitle = title
 
     var href = ea.href || ea.name;

src/components/tools/lively-index-search.js

@@ -271,7 +271,7 @@ export default class IndexSearch extends Morph {
 
         var newText = file.text.replace(new RegExp(this.pattern, "g"), this.replace)
         file.replaced = newText
-        var replacedText = this.hightlightPattern(newText, RegExp.escape(this.replace))
+        var replacedText = this.hightlightPattern(newText, _.escapeRegExp(this.replace))
         var replacePreviewColumn = <td id="replace">{replacedText}</td>
         file.item.appendChild(replacePreviewColumn)