CLC-2659 - CFV Show past due items
https://jira.media.berkeley.edu/jira/browse/CLC-2659

Also fixes an issue with the navigation
Merge pull request #1659 from christianv/CLC-2659

CLC-2659 - CFV Show past due items
Merge pull request #1655 from ctweney/clc-2601

CLC-2601 Caching the JSONified data for most big feeds
CLC-2576 Configurable memcached/memory store choice