Update Tag wording.
Decouple specific app detail template from object_detail base.

https://github.com/madewithbytes/us_ignite/issues/265
Decouple specific hub detail template from object_detail base.
Clean up hub detail template.
Add membership details to hub detail page.
Add ``website`` alias to resource URL.
Use an include as contact in the sidebar.
Decouple resource detail template from object_detail base.
Make tags uppercase.
Return list of hubs instead of membership.
Cosmetic: Removed unused mark up.
Decouple event detail template from object_detail base.
Add URL list to event detail context.
Add interests as a string list in the template.
Add admin section for a resource.
Decouple organization detail template from object_detail base.
Add organization as a include.
Add admin url for Challenges.
Decouple specific challenge detail template from object_list.
Add description to the challenge.