standardized modal action footer buttons

action button should be on the left, in a different color, and then
close button should be grey on the right
recalculated response rate

Response rate should be among those who completed the survey, not among
all people in the course.  Also, only show the numerical response stuff
if there are numerical responses-- since it's possible for some
questions to get no responses
show future evaluations only if they exist
allow selection of classType during preview

template preview selection of class type should show questions for that
class type as well as the "ALL" class type
include TA type in the questions help prompt
probably don't need the optional question marks
friendly suggestions for naming your templates
show global questions on template creation/edit
max length used for questions if available
fix breaking change where edit doesn't have id
make sure to order correctly for evals
new method for listing pending/open class evals

might replace the evals list, which i don't think is super useful
big swtich to viewing classtime evals for pending

clicking details on a cte shows section details -- might want to
suppliment this with a specific graph?  Or browse to course details
instead?

Maybe group evals by course and let people dig in from there?  probably
not?
protect against type conversion errors
Merge pull request #75 from ucdavis/cabin-updates

Many minor updates, see comments