Modify allaboutyou to be percentage based.

Use proper typography for quotes.
Added variable headlines.
Fix follower count history test to not fail on the 31st.
Properly pluralize replies/comments in outreach headline.
Standardize quotes in outreach insight.
Merge pull request #1860 from cdmoyer/enough-about-me-to-percentage

Change "But enough about me..." insight from sum to percentage and add variety to the headline copy.
Merge pull request #1862 from cdmoyer/fix-list-membership-quotes

Standardize quotes in list membership insight
Merge pull request #1861 from cdmoyer/fix-plural-in-outreach-punchcard

Properly pluralize replies/comments in Outreach headline
Update weekly graph

Add insight text, so email has content.
Show actual popular posts in graph.
WeeklyGraph further refactoring

Moved DashBoardModuleCacher::getHotPostVisualizationData to ChartHelper::getPostActivityVisualizationData, added tests.
Changed insight headline.
Addded test ensuring insight isn't generated without any active posts.
Don't show chart for <3 posts.  (Less than three, not love posts.)