Hello,
The problem is that both D:\projekty\ogloszenia and D:\projekty\ogloszenia\src\apps are on your python path.
The recommended way to do it is to import all of your code relative to manage.py and only have that directory on your python path, so in your case, that would be:
src.apps.entries.models.Entry_tags
src.project.settings
Or, in your case it may make sense to put the manage.py in your src folder, making it:
apps.entries.models.Entry_tags
project.settings
If you don't want the "apps" prefix on your apps, you may want to consider moving them up one level and removing the apps directory.
Collin