gwt sample - typo + updates to make comments uniform

Remove ExtJS implementation due to old age.

Fix outstanding issues with PureMVC implementation

Close #871

If you want to smartly update the contents of a Collection, adding new models,
removing missing ones, and merging those already present, you now call set
(previously named "update"), a similar operation to calling set on a Model. This
is now the default when you call fetch on a collection. To get the old behavior,
pass {reset: true}.

In you code you use listener to 'reset' event. So you should pass {reset: true}
to get what you want.

> Add new items to end of list
> Escape key abandons todo edit

[React-Backbone] Fix sidebar description

[angularjs] use module instead of global variable.

fix it's/its usage in app-spec.md

Updating known issues

[React-Backbone] Fix dependency path capitalization

FIxes #854.

Improve vanilla JS $live: variable names, unnecessary if

Added a test to verify that routing works with the back button

re-instated the react-backbone tests

[React] New react-backbone todomvc with fixes and React version bump

Like #855, bumped React version (along with all the other deps) and made
some fixes.

[React] New main todomvc with fixes and React version bump

Fixes all the stuff from #785 too.

upgrade backbone to 1.1.1 and underscore to 1.6.0

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

Fixed typo in comment

shortened ComponentJS description