8.5.0 to 8.8.2

This is a major update. not only I updated to last version (8.8.2 - and as for this moment this project is updated to the latest commit) 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.
* Added .jquery.cookies.js for the basic and basic-plus for reading the csrf cookie.
* Angular is in newer (and not stable) release then 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 to change 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 afdd516227ee4d8055bbb654b47fe2bc8a7f8bed . I finished it and then started adding another demos.