Spouse - more alt def work

Removed extra section at end of first analysis section looking at only
ivws after 1 year after death b/c this isn't the right way to do this,
need to redo propensity score for the different sample as done later in
the code
Fixed the std diff calculations in the Tables 1,2, fixed labels in the
spouse table
Fixed calipers in the overall sample and helper july 2014 work
Added section re interviews 12 months and later with the 3+ day treat /
0-2 day control groups
Spouse factors minor code fix