Update requirements.txt

Delete unused requirements and add missing requirements.

Issue: HIC-186
Change-Id: I30258831a09347973d2456c1cbe2b223e4243c0e
diff --git a/requirements.txt b/requirements.txt
index 82fe059..d3dffd8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,67 +1,35 @@
-cffi==1.8.3
+certifi==2018.8.24
+chardet==3.0.4
 coreapi==2.3.3
-decorator==4.0.10
+coreschema==0.0.4
 defusedxml==0.5.0
 Django==1.11.14
 django-allauth==0.36.0
-django-appconf==1.0.2
 django-bootstrap-form==3.4
-django-bootstrap-forms==0.1
 django-bootstrap3==10.0.1
-django-coreapi==2.3.0
 django-crispy-forms==1.7.2
 django-extensions==2.1.0
 django-filter==2.0.0
 django-frontend==1.8.0
 django-frontend-skeleton==3.0.0
-django-jwt-auth==0.0.2
-django-ratelimit==1.1.0
 django-taggit==0.22.2
-django-user-accounts==2.0.3
 djangorestframework==3.8.2
 drf-yasg==1.10.0
-entrypoints==0.2.2
-enum34==1.1.6
-idna==2.6
-ipykernel==4.5.0
-ipython==5.1.0
-ipython-genutils==0.1.0
-ipywidgets==5.2.2
+future==0.16.0
+idna==2.7
+inflection==0.3.1
 itypes==1.1.0
 Jinja2==2.10
-jsonschema==2.5.1
-jupyter==1.0.0
-jupyter-client==4.4.0
-jupyter-console==5.1.0
-jupyter-core==4.2.0
-Markdown==2.6.8
 MarkupSafe==1.0
-mistune==0.7.3
-nbconvert==4.2.0
-nbformat==4.1.0
-notebook==4.2.3
-oauthlib==2.0.2
-pexpect==4.2.1
-pickleshare==0.7.4
-prompt-toolkit==1.0.7
-ptyprocess==0.5.1
-pyasn1==0.1.9
-pycparser==2.14
-Pygments==2.1.3
-PyJWT==1.4.2
-python-dateutil==2.6.0
+oauthlib==2.1.0
+openapi-codec==1.3.2
+pluggy==0.7.1
+py==1.6.0
 python3-openid==3.1.0
 pytz==2018.5
-pyzmq==16.0.0
-qtconsole==4.3.0
-requests==2.18.4
-requests-oauthlib==0.8.0
-simplegeneric==0.8.1
-simplejson==3.13.2
-six==1.10.0
-terminado==0.6
-tornado==4.4.2
-traitlets==4.3.1
+requests==2.19.1
+requests-oauthlib==1.0.0
+ruamel.yaml==0.15.64
+six==1.11.0
 uritemplate==3.0.0
-wcwidth==0.1.7
-widgetsnbextension==1.2.6
+urllib3==1.23