Unpinned a bunch of package versions

This helps us get the latest versions and test with those, instead.

requirements.txt

@@ -10,13 +10,13 @@ celery[redis]==4.0.2
 CommonMark==0.7.2
 elasticsearch==6.1.1
 elasticsearch-dsl==6.1.0
-Eve==0.8
-Flask==1.0.2
-Flask-Babel==0.11.2
-Flask-Caching==1.4.0
-Flask-Script==2.0.6
-Flask-Login==0.3.2
-Flask-WTF==0.14.2
+Eve
+Flask
+Flask-Babel
+Flask-Caching
+Flask-Script
+Flask-Login
+Flask-WTF
 gcloud==0.12.0
 google-apitools==0.4.11
 httplib2==0.9.2
@@ -34,30 +34,30 @@ wheel==0.29.0
 zencoder==0.6.5
 
 # Secondary requirements
-amqp==2.1.4
-billiard==3.5.0.2
-Flask-PyMongo==0.4.1
-Cerberus==1.2.0
-Events==0.2.2
-future==0.15.2
-html5lib==0.99999999
-googleapis-common-protos==1.1.0
-itsdangerous==0.24
-Jinja2==2.9.6
-kombu==4.0.2
-oauth2client==2.0.2
-oauthlib==2.0.1
-olefile==0.44
-protobuf==3.0.0b2.post2
-protorpc==0.11.1
-pyasn1-modules==0.0.8
-pymongo==3.4.0
-pytz==2017.2
-requests-oauthlib==0.7.0
-rsa==3.4.2
-simplejson==3.10.0
-six==1.10.0
-urllib3==1.22
-vine==1.1.3
-WTForms==2.1
-Werkzeug==0.11.15
+# amqp==2.1.4
+# billiard==3.5.0.2
+# Flask-PyMongo==0.4.1
+# Cerberus==1.2.0
+# Events==0.2.2
+# future==0.15.2
+# html5lib==0.99999999
+# googleapis-common-protos==1.1.0
+# itsdangerous==0.24
+# Jinja2==2.9.6
+# kombu==4.0.2
+# oauth2client==2.0.2
+# oauthlib==2.0.1
+# olefile==0.44
+# protobuf==3.0.0b2.post2
+# protorpc==0.11.1
+# pyasn1-modules==0.0.8
+# pymongo==3.4.0
+# pytz==2017.2
+# requests-oauthlib==0.7.0
+# rsa==3.4.2
+# simplejson==3.10.0
+# six==1.10.0
+# urllib3==1.22
+# vine==1.1.3
+# WTForms==2.1
+# Werkzeug==0.11.15