Nawqaan 222

The feed can be added to a template using the inclusion tag 'pull_feed' and the appropriate url. The feed is processed to remove text we don't want (edited by and links to old versions) as well as correcting links which are interfeed links, by making them relative.

I created a new app, utils, and added the templatetags directory to it. The utils directory can be used for project wide utilities such as this. Added several new requirements to implement the feature plus packages to aid in testing.

Once this is merged, I'll update the webapp job to run the python tests and also to add it to Sonar.

This will not complete the ticket as I have been testing using a feed from WQP. I'm waiting on the NAR space to be added to MyUSGS. I'll add one page to complete this ticket so that it can be tested.