Django and wysiwyg editor (summernote) loads just sometimes - django

Question

I have problem with setting https://github.com/lqez/django-summernote . I followed steps in configuration part and it works great with django runserver - I have summernote in admin page etc. But when I add it to public server, it loads just sometimes.
When I'm pressing F5 in admin page, I can see that sometimes summernote loads and sometimes it doesnt. In nginx-error.log I have this message, when it is not loaded:
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /admin/django_summernote/attachment/ HTTP/1.1" 200 3347 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
and I get something like:
Not Found
The requested URL /admin/django_summernote/attachment/ was not found on this server.
and this when it is loaded:
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /static/admin/css/base.css HTTP/1.1" 304 0 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /static/admin/css/changelists.css HTTP/1.1" 304 0 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /static/admin/js/admin/RelatedObjectLookups.js HTTP/1.1" 304 0 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /static/admin/js/core.js HTTP/1.1" 304 0 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /static/admin/js/jquery.min.js HTTP/1.1" 304 0 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /static/admin/js/jquery.init.js HTTP/1.1" 304 0 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /static/admin/js/actions.min.js HTTP/1.1" 304 0 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /admin/jsi18n/ HTTP/1.1" 200 2384 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
*ip* - - [20/Feb/2014:12:00:56 +0000] "GET /static/admin/img/icon_searchbox.png HTTP/1.1" 304 0 "http://domain.eu/admin/django_summernote/attachment/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/32.0.1700.107 Safari/537.36"
I'm really confused, because it is properly installed and works well with django runserver. And when it is properly loaded, it works just fine. My static dir also has this files:
`-- django_summernote
|-- SOURCE
|-- django_summernote.css
|-- jquery.fileupload.js
|-- jquery.iframe-transport.js
|-- jquery.ui.widget.js
|-- lang
|-- summernote.css
`-- summernote.min.js
Thanks

Answer 1

It must be an debug mode when you're running django project with runserver.
If django runs in debug mode, serving static files via urls.py works fine. But this doesn't work as expected on debug=False.
You have to serve static files via web servers (like nginx) on production phase. Please refer https://docs.djangoproject.com/en/dev/howto/static-files/