Application port configurable

Author: kwn

config.dist.yml

@@ -1,4 +1,5 @@
 app:
+  port: 5000
   debug: false
 mysql:
   host: localhost

run.py

@@ -1,4 +1,4 @@
-from activities import app
+from activities import app, config
 
 if __name__ == '__main__':
-    app.run()
+    app.run(port=config.get('app').get('port'))