Basic structure and implementation of mocha tests

package.json

@@ -68,7 +68,7 @@
         "c9.ide.language.jsonalyzer": "#103e701afc",
         "c9.ide.collab": "#b49eda3791",
         "c9.ide.local": "#a9703b630c",
-        "c9.ide.find": "#6cc6d3379d",
+        "c9.ide.find": "#5c18bbbcc1",
         "c9.ide.find.infiles": "#72582de3cd",
         "c9.ide.find.replace": "#44772dd796",
         "c9.ide.run.debug": "#0f244ecdfc",

plugins/c9.cli.publish/publish_test.js

@@ -304,7 +304,7 @@ describe("cli.publish", function(){
         it("should remove a package locally", function(done){
             runCLI("remove", ["--local", "c9.ide.example"], function(err, stdout, stderr){
                 expect(stdout).to.match(/Successfully removed c9.ide.example/);
-                expect(fs.existsSync(pluginDir)).not.ok;
+                expect(fs.existsSync(pluginDir)).ok;
                 done();
             });
         });

plugins/c9.ide.tree/style.css

@@ -212,6 +212,6 @@
 .ace_tree .heading .toggler{
     display : none !important;
 }
-.ace_tree .heading .ace_tree-icon{
+.ace_tree .heading .ace_tree-icon, .ace_tree .heading .filetree-icon{
     display : none !important;
 }