[PD-664] Changed what it means to be sorted by activity so that most recent activity shows up, rather than earliest activity
Merge pull request #936 from DirectEmployers/default_activity_order

[PD-664] Changed what it means to be sorted by activity
Removed try-except blocks and simplified logic.
Merge pull request #938 from DirectEmployers/simplified-contact-type-sort

Removed try-except blocks and simplified logic.
made sure not having records doesn't throw error.
Rather than prevent empty date values, I opted to disregard them.
Merge pull request #940 from DirectEmployers/pd-652

[PD-652] View all does just that
Merge branch 'master' of github.com:DirectEmployers/MyJobs into FEATURE-multiple-locations

Conflicts:
	mypartners/helpers.py