Moving version to a single place in version.py (#358)

* Moving version to a single place in version.py
* Requirements in setup.py + tox.ini

puppetboard/app.py

@@ -29,6 +29,8 @@ from puppetboard.dailychart import get_daily_reports_chart
 
 import werkzeug.exceptions as ex
 
+from . import __version__
+
 REPORTS_COLUMNS = [
     {'attr': 'end', 'filter': 'end_time',
      'name': 'End time', 'type': 'datetime'},
@@ -66,6 +68,11 @@ logging.basicConfig(level=numeric_level)
 log = logging.getLogger(__name__)
 
 
+@app.template_global()
+def version():
+    return __version__
+
+
 def stream_template(template_name, **context):
     app.update_template_context(context)
     t = app.jinja_env.get_template(template_name)