Merge pull request #1 from wpninjas/develop

Update
Swap sub filter dates in case of user error

Reverses the beginning and end dates for submissions filtering if the
user inputs a beginning date that is after the end date.
Added h/m/s back to sub query dates

Added h/m/s back to sub query dates
Use datetime object instead of string

Use datetime object instead of string for nf_get_begin_date and
nf_get_end_date
Time voodoo

fixed dates in subs-cpt
syntax error

syntax error
bugfix

bugfix
Merge pull request #281 from wpnzach/develop

Return datetime object in nf_get_(begin/end)_date, prevent user error