Replace ckeditor with tinymce (#30)

* Replace ckeditor with tinymce due to deprecation
* Remove any ckeditor dependency from old migrations
   Disable alters, replace create with plain models.TextField
* Reformat files
* Add more hardening in image_upload

ram/ram/urls.py

@@ -13,6 +13,7 @@ Including another URLconf
     1. Import the include() function: from django.urls import include, path
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
+
 from django.apps import apps
 from django.conf import settings
 from django.shortcuts import redirect
@@ -20,9 +21,12 @@ from django.conf.urls.static import static
 from django.contrib import admin
 from django.urls import include, path
 
+from ram.views import UploadImage
+
 urlpatterns = [
     path("", lambda r: redirect("portal/")),
-    path("ckeditor/", include("ckeditor_uploader.urls")),
+    path("tinymce/", include("tinymce.urls")),
+    path("tinymce/upload_image", UploadImage.as_view(), name="upload_image"),
     path("portal/", include("portal.urls")),
     path("admin/", admin.site.urls),
     path("api/v1/consist/", include("consist.urls")),