Move requirements to tests

requirements.txt

@@ -4,7 +4,6 @@ certifi==2017.7.27.1
 chardet==3.0.4
 Django==2.1
 django-enumfields==0.10.0
-django-nose==1.4.5
 djangorestframework==3.7.1
 django-webpack-loader==0.5.0
 elasticsearch==6.2.0
@@ -14,7 +13,6 @@ idna==2.6
 ijson==2.3
 jdcal==1.3
 lxml==4.2.3
-nose==1.3.7
 olefile==0.44
 openpyxl==2.4.9
 Pillow==4.3.0

tests-requirements.txt

 flake8
 tripoli
 fakeredis
+django-nose