bump django version, and remove strict versioning on some requirements

Author: Someguy123

requirements.txt

@@ -1,4 +1,4 @@
-Django==2.1.7
+Django==2.1.9
 django-dotenv==1.4.2
 django-getenv==1.3.2
 
@@ -8,20 +8,20 @@ django-filter==2.1.0
 django-cors-headers==2.5.2
 
 privex-loghelper>=1.0.2
-privex-steemengine==1.0.1
+privex-steemengine>=1.0.1
 privex-jsonrpc>=1.0.1
 
-mysqlclient==1.4.2.post1
-psycopg2==2.7.7 --no-binary psycopg2
+mysqlclient>=1.4.2.post1
+psycopg2>=2.7.7 --no-binary psycopg2
 
-requests==2.21.0
-beem==0.20.19
-python-dateutil==2.8.0
-gunicorn==19.9.0
+requests>=2.21.0
+beem>=0.20.19
+python-dateutil>=2.8.0
+gunicorn>=19.9.0
 
 cryptography>=2.6.1
 
-Faker==1.0.4
+Faker>=1.0.4
 
 libeospy==1.1.11