Added view holder pattern to StatsReferrersFragment
Moved expensive operations in StatsVisitorsAndViewsFragment to threads
Cleanup based on code analysis
Consolidated view holders
Bar graph data is now calculated in the background
Optimized creation of inflaters, view holders, formatters; now using NetworkImageView instead of FadeInImageView
Replaced numerous instances of DecimalFormat with FormatUtils.formatDecimal()
1st pass at stats service - very incomplete
2nd pass at stats service - still very incomplete
3rd pass at stats service - works but not optimal
Stats service now functional (needs additional work), cleanup based on code analysis
Removed StatsRestHelper - all stats requests are now made by the various AbsStatsTask descendants and handled by StatsService
Fixed bug that caused stats to refresh with every resume and fail to restore previous state
Moved creation of executor to its own method
Added missing "return" in waitForResponse() when InterruptedException occurs
Rewrote faulty waitForResponse()
Merge branch 'develop' of https://github.com/wordpress-mobile/WordPress-Android into issue/976-optimize-stats
Increased executor timeout from 30sec to 60sec
Summary changes are now broadcast
Tweaked performance of StatsAbsPagedViewFragment