Avoid PHP Notice "Undefined variable"
Issue #2123: EOY Longest posting streak
Issue #2192: EOY Controversial Topics (Facebook) insight
add PostDAO::getRetweetsPerUserInRange
Issue #2141: EOY Who You Amplified Insight
Fix year-end landing page paging
Staging: Test EOY insights

Staging: Test EOY Most Favliked

Staging: Test EOY All About You

Staging: Test EOY Most Talkative Day

Staging: Test EOY Popular Pic

Staging: Test EOY Exclamation Count

Staging: Test F-Bomb Count

Staging: Test Biggest Fans

Staging: Test Gender analysis

Staging: Test EOY Most Retweeted

Staging: Test EOY Bestie

Staging: Test EOY Word count

Staging: Test EOY Most conversation

Staging: Test EOY Most links

Staging: Test EOY LOL count
Staging: Test EOY Most Popular link
Staging: Test EOY Who You Faved
Staging: Test EOY Streak
Staging: Test EOY Controversial topics
Staging: Test EOY Who You Amplified