testaction gets names in a single faster query
testaction gets all relevant fields in single query
testaction builds lists of volunteers, shifts, and details
testaction creates or updates volunteers for any contacts returned by SF query
Merge pull request #13 from curiousepic/master

First version of sync method, as testaction
sync method updating and creating volunteers and shifts correctly, added shift_name
Merge pull request #14 from curiousepic/master

sync method updating and creating volunteers and shifts correctly
updated testaction method in volunteers controller
correctly selects and displays names for todays shifts