allow monthly scheduling#2

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MitzaCeusan wants to merge 4 commits intoableGray:masterfrom

Commits on Nov 8, 2011

allow monthly schedules
MitzaCeusan
committed

Commits on Feb 10, 2014

use the same syntax for end_time that ice_cube requires
MitzaCeusan
committed

Commits on Feb 24, 2014

make specs pass, make schedule_attributes return accurate info, make schedule_attributes= set end time
ianhenrysmith
committed
Merge pull request #1 from kapost/fix_schedule_attributes_business
ianhenrysmith
committed