Update handlebars version at about page
Update handlebars version at about page

Handlebars 1.3.0 seems to work with Ember.js 1.4.0.
And all tests are passed in this version:
* https://github.com/emberjs/ember.js/blob/v1.4.0/Gemfile.lock#L48

jimmay5469/website,raycohen/website,wifelette/website,cllns/emberjs-website,koriroys/emberjs-website,elidupuis/website,kpfefferle/website,kkenan/website,koriroys/emberjs-website,ktornwall/website,shearwater-intl/website,bmac/website,tmock12/website,maxcal/website,Eric-Guo/website,raycohen/website,knownasilya/website,mrjavascript/website,balupton/ember-website,jimmay5469/website,bmac/website,davidpett/website,shearwater-intl/website,AaronSikes/website,MinxianLi/ember,greyhwndz/website,ktornwall/website,SaladFork/emberjs-website,kkenan/website,rwjblue/website,josemarluedke/ember-website,bmac/website,AaronSikes/website,datajohnny/website,AgilionApps/website,workmanw/ember-website,greyhwndz/website,cllns/emberjs-website,balupton/ember-website,zeppelin/emberjs-website,wifelette/website,MinxianLi/ember,AgilionApps/website,kpfefferle/website,duggiefresh/website,tmock12/website,mrjavascript/website,cyberkoi/website,AgilionApps/website,Nick-Cotter/aboutme,workmanw/ember-website,SaladFork/emberjs-website,cyberkoi/website,cllns/emberjs-website,EricSchank/website,quangv/website,elwayman02/website,maxcal/website,josemarluedke/ember-website,shearwater-intl/website,cyberkoi/website,tmock12/website,workmanw/ember-website,maxcal/website,knownasilya/website,martndemus/website,Eric-Guo/website,greyhwndz/website,SaladFork/emberjs-website,duggiefresh/website,martndemus/website,zeppelin/emberjs-website,zeppelin/emberjs-website,Nick-Cotter/aboutme,mrjavascript/website,martndemus/website,davidpett/website,datajohnny/website,Eric-Guo/website,workmanw/ember-website,elwayman02/website,wifelette/website,zeppelin/emberjs-website,josemarluedke/ember-website,EricSchank/website,quangv/website,elidupuis/website,balupton/ember-website,datajohnny/website,jimmay5469/website,bmac/website,MinxianLi/ember,koriroys/emberjs-website,elidupuis/website,rwjblue/website,kkenan/website,davidpett/website,EricSchank/website,duggiefresh/website,quangv/website,elwayman02/website,ktornwall/website,kpfefferle/website,AaronSikes/website,raycohen/website,SaladFork/emberjs-website,josemarluedke/ember-website