8.5.0 to 8.8.2

This is a major update. not only I updated up to lastest commit (version 8.8.2 and one commit more) but I added all the demos: Basic, Basic-Plus, Angular, jQuery UI.

Some notes:
* Working only with Django 1.5+. I used the {% Verbatim %} template tag inside the Angular & jQuery demos.(which will be great too instead of templatetags in the Basic Plus UI demo.
* Added .jquery.cookies.js for the basic and basic-plus demos to read the csrf cookie.
* I used newer (not stable release) angular.js release (not like the original Jquery-File-Upload project) due to new settings in that release to supply csrf using other cookie name then default (like Django's). better then changing the csrf cookie name in the Django (I think).
* I've removed the is_ajax() from the DELETE view. needed to fix angular DELETE method which then was redirected and the UI wasn't updated. Anyway, It's logical to return JSON always. There are not security implications from this.

if you want to merge only the Basic Plus UI version 8.8.2, you can merge commit 76999a739b2854da0116bbb0b770251084c133de. I finished it and then started adding another demos.