add folder app, update folder content_type, better tests for apps

backend/tracim_backend/models/applications.py

 
 )
 
+folder = Application(
+    label='Folder',
+    slug='contents/folder',
+    fa_icon='folder-open-o',
+    hexcolor='#252525',
+    is_active=True,
+    config={},
+    main_route='',
+)
+
 _file = Application(
     label='Files',
     slug='contents/file',
     markdownpluspage,
     _file,
     thread,
+    folder,
     calendar,
 ]

backend/tracim_backend/models/contents.py

 from tracim_backend.exceptions import ContentStatusNotExist
 from tracim_backend.models.applications import html_documents
 from tracim_backend.models.applications import _file
+from tracim_backend.models.applications import folder
 from tracim_backend.models.applications import thread
 from tracim_backend.models.applications import markdownpluspage
 
 # TODO - G.M - 31-05-2018 - Set Better folder params
 folder_type = ContentType(
     slug='folder',
-    fa_icon=thread.fa_icon,
-    hexcolor=thread.hexcolor,
+    fa_icon=folder.fa_icon,
+    hexcolor=folder.hexcolor,
     label='Folder',
-    creation_label='Create collection of any documents',
+    creation_label='Create a folder',
     available_statuses=CONTENT_STATUS.allowed(),
 )
 

backend/tracim_backend/tests/functional/test_system.py

 # coding=utf-8
 from tracim_backend.tests import FunctionalTest
+from tracim_backend.models.applications import applications
 
 """
 Tests for /api/v2/system subpath endpoints.
         )
         res = self.testapp.get('/api/v2/system/applications', status=200)
         res = res.json_body
-        application = res[0]
-        assert application['label'] == "Text Documents"
-        assert application['slug'] == 'contents/html-document'
-        assert application['fa_icon'] == 'file-text-o'
-        assert application['hexcolor'] == '#3f52e3'
-        assert application['is_active'] is True
-        assert 'config' in application
-        application = res[1]
-        assert application['label'] == "Markdown Plus Documents"
-        assert application['slug'] == 'contents/markdownpluspage'
-        assert application['fa_icon'] == 'file-code-o'
-        assert application['hexcolor'] == '#f12d2d'
-        assert application['is_active'] is True
-        assert 'config' in application
-        application = res[2]
-        assert application['label'] == "Files"
-        assert application['slug'] == 'contents/file'
-        assert application['fa_icon'] == 'paperclip'
-        assert application['hexcolor'] == '#FF9900'
-        assert application['is_active'] is True
-        assert 'config' in application
-        application = res[3]
-        assert application['label'] == "Threads"
-        assert application['slug'] == 'contents/thread'
-        assert application['fa_icon'] == 'comments-o'
-        assert application['hexcolor'] == '#ad4cf9'
-        assert application['is_active'] is True
-        assert 'config' in application
-        application = res[4]
-        assert application['label'] == "Calendar"
-        assert application['slug'] == 'calendar'
-        assert application['fa_icon'] == 'calendar'
-        assert application['hexcolor'] == '#757575'
-        assert application['is_active'] is True
-        assert 'config' in application
+        assert len(res) == len(applications)
+        for counter, application in enumerate(applications):
+            assert res[counter]['label'] == application.label
+            assert res[counter]['slug'] == application.slug
+            assert res[counter]['fa_icon'] == application.fa_icon
+            assert res[counter]['hexcolor'] == application.hexcolor
+            assert res[counter]['is_active'] == application.is_active
+            assert res[counter]['config'] == application.config
 
     def test_api__get_applications__err_401__unregistered_user(self):
         """