fix(inspectedApp) support string ids

The jsonTree was not displaying for angular 1.2 apps as inspectedApp
was attempting to convert ids to integer form while angular 1.2 ids
are strings. Removing conversion.

Fixes issue #231

Author: gary-b

panel/components/inspected-app/inspected-app.js

@@ -48,7 +48,7 @@ function inspectedAppService($rootScope, $q) {
   };
 
   function invokeAngularHintMethod(method, scopeId, path, value) {
-    var args = [parseInt(scopeId, 10), path || ''].
+    var args = [scopeId, path || ''].
                   map(JSON.stringify).
                   concat(value ? [value] : []).
                   join(',');

panel/components/inspected-app/inspected-app.spec.js

@@ -159,13 +159,17 @@ describe('inspectedApp', function() {
       expect(chrome.devtools.inspectedWindow.eval).toHaveBeenCalledWith('angular.hint.unwatch(1,"")');
     });
   });
-
-
+  
   describe('inspectScope', function () {
     it('should call chrome devtools APIs', function() {
       inspectedApp.inspectScope(2);
       expect(chrome.devtools.inspectedWindow.eval).toHaveBeenCalledWith('angular.hint.inspectScope(2,"")');
     });
+
+    it('should handle angular 1.2 style string ids', function() {
+      inspectedApp.inspectScope('002');
+      expect(chrome.devtools.inspectedWindow.eval).toHaveBeenCalledWith('angular.hint.inspectScope("002","")');
+    });
   });
 
   function createMockChrome() {