Hi,
I have read the documentation for creating an extensible app 
(http://docs.pylonsproject.org/projects/pyramid/en/master/narr/extending.html) 
and I think I understand most of it. 
I have an app that can be used to visualize some specific alerts and would 
want it to be extensible. Specifically add-on features should be pluggable.
So my bare-bone apps will have views and templates that display the alerts 
and allow ,say, grouping. I can write a plug-in that allows 
user-corelation. And another plugin that handles prioritized alerts. While 
a third plug-in can handle localization data. Currently I do this using 
multiple if's in the views and the templates but it is clunky and a 
nightmare to test. How do I go about transforming my app into a plug-in 
type architecture while avoiding code, especially template, duplication? 
Example - Say my app displays alert names,times, sources and references. 
Now my plug-in will also display user-information (As another column in an 
HTML table). I can partially reuse the view (by calling functions from the 
original app's view), but how do I reuse the old template while simply 
adding newer code to it. I use sqlalchemy as ORM and jinja2 as templating 
language

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