Cleanup and update requirements.

requirements.txt

@@ -1,34 +1,11 @@
-alembic==0.7.6
-aniso8601==1.0.0
-arrow==0.5.4
-click==4.1
+alembic==0.8.2
+arrow==0.6.0
 Flask==0.10.1
-Flask-Assets==0.10
+Flask-Assets==0.11
 Flask-Bower==1.2.1
-Flask-HTTPAuth==2.5.0
-Flask-Migrate==1.4.0
-Flask-RESTful==0.3.3
+Flask-Migrate==1.5.1
+Flask-RESTful==0.3.4
 Flask-Script==2.0.5
 Flask-SQLAlchemy==2.0
-Flask-WTF==0.11
-ipdb==0.8.1
-ipython==3.2.0
-itsdangerous==0.24
-Jinja2==2.7.3
-Mako==1.0.1
-MarkupSafe==0.23
-prompt-toolkit==0.42
-psycopg2==2.6
-Pygments==2.0.2
+psycopg2==2.6.1
 python-dateutil==2.4.2
-pytz==2015.4
-semantic-version==2.4.2
-six==1.9.0
-SQLAlchemy==1.0.4
-sqlparse==0.1.14
-uritemplate.py==0.3.0
-wcwidth==0.1.4
-webassets==0.10.1
-Werkzeug==0.10.4
-wheel==0.24.0
-WTForms==2.0.2