Merge branch 'dev' into feature-websockets-status

Pipfile

@@ -19,6 +19,7 @@ django-extensions = "*"
 django-filter = "~=2.4.0"
 django-q = "~=1.3.4"
 djangorestframework = "~=3.12.2"
+filelock = "*"
 fuzzywuzzy = "*"
 gunicorn = "*"
 imap-tools = "*"
@@ -26,6 +27,7 @@ langdetect = "*"
 pdftotext = "*"
 pathvalidate = "*"
 pillow = "*"
+pikepdf = "*"
 python-gnupg = "*"
 python-dotenv = "*"
 python-dateutil = "*"
@@ -40,6 +42,7 @@ whoosh="~=2.7.4"
 inotifyrecursive = "~=0.3.4"
 ocrmypdf = "*"
 tqdm = "*"
+tika = "*"
 channels = "~=3.0"
 channels-redis = "*"
 daphne = "~=3.0"