deploying bootstrap on heroku with django

I am having trouble with deployment of twitter bootstrap on my heroku client. My html code is not showing like it should (alignment, special table layouts, etc)

All is working locally, but i assume it has to do with the static files that don't get transferred correctly.

This is the static file structure, but have a look how it looks like when i open the "source chrome console" on my live heroku verson.

View of how the folder structure should be

Folder structure of deployed code on heroku

It looks like some folders are "stitched" one to another. what could be my issue? should i avoid "-" and "_" in my file names?

thanks for the help.

based on extra questions, I added more info on my settings.py file. I followed a tutorial to get all the stuff right. Also whitenoise was installed, added to wsgi.py.

wsgi.py

"""
WSGI config for xforward project.

It exposes the WSGI callable as a module-level variable named ``application``.

For more information on this file, see
https://docs.djangoproject.com/en/1.10/howto/deployment/wsgi/
"""

import os
from django.core.wsgi import get_wsgi_application
from whitenoise.django import DjangoWhiteNoise

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "xforward.settings")

from django.core.wsgi import get_wsgi_application

application = get_wsgi_application()
application = DjangoWhiteNoise(application)

settings.py

--

"""
Django settings for xforward project on Heroku. For more info, see:
https://github.com/heroku/heroku-django-template

For more information on this file, see
https://docs.djangoproject.com/en/1.10/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.10/ref/settings/
"""

import os
import dj_database_url

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
PROJECT_ROOT = os.path.dirname(os.path.abspath(__file__))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.10/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = "{{ secret_key }}"

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.admindocs', ### onbekend of deze nodig is
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    # Disable Django's own staticfiles handling in favour of WhiteNoise, for
    # greater consistency between gunicorn and `./manage.py runserver`. See:
    # http://whitenoise.evans.io/en/stable/django.html#using-whitenoise-in-development
    'whitenoise.runserver_nostatic',
    'django.contrib.staticfiles',
    'frontendapp',
]

LOGIN_REDIRECT_URL = 'forwardthis'

EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'whitenoise.middleware.WhiteNoiseMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'xforward.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
            'debug': DEBUG,
        },
    },
]

WSGI_APPLICATION = 'xforward.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.10/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': os.environ.get('postgresname'),
        'USER': os.environ.get('postgresuser'),
        'PASSWORD': os.environ.get('postgrespassword'),
        'HOST': os.environ.get('postgreshost'),
        'PORT': os.environ.get('postgresport'),
    }
}

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

# Internationalization
# https://docs.djangoproject.com/en/1.10/topics/i18n/

LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True

# Update database configuration with $DATABASE_URL.
db_from_env = dj_database_url.config(conn_max_age=500)
DATABASES['default'].update(db_from_env)

# Honor the 'X-Forwarded-Proto' header for request.is_secure()
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

# Allow all host headers
ALLOWED_HOSTS = ['*']

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.10/howto/static-files/

STATIC_ROOT = os.path.join(PROJECT_ROOT, 'staticfiles')
STATIC_URL = '/static/'

# Extra places for collectstatic to find static files.
STATICFILES_DIRS = [
    os.path.join(PROJECT_ROOT, 'static'),
]

# Simplified static file serving.
# https://warehouse.python.org/project/whitenoise/
STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage'

--