Add requirements

requirements.txt

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+backcall==0.1.0
+certifi==2019.11.28
+chardet==3.0.4
+decorator==4.4.2
+Django==2.1.15
+django-cas-server==1.1.0
+idna==2.9
+ipython==7.13.0
+ipython-genutils==0.2.0
+jedi==0.16.0
+ldap3==2.7
+lxml==4.5.0
+parso==0.6.2
+pexpect==4.8.0
+pickleshare==0.7.5
+prompt-toolkit==3.0.4
+ptyprocess==0.6.0
+pyasn1==0.4.8
+Pygments==2.6.1
+pytz==2019.3
+requests==2.23.0
+requests-futures==1.0.0
+six==1.14.0
+traitlets==4.3.3
+urllib3==1.25.8
+wcwidth==0.1.9