Changed required gems; added regex for employee email
Created WorkoutPlan CRUD, Created Plans and PlanExercises
Added workoutplans

added handlebars (plus templates)
added _form2 for edit plans
-- TODO: refactor plans controller
Refactored workoutplans

plans_controller slimmed (moved logic to model)
plan model saves plan_exercises using before_save
plan_exercise model deletes itself when _destroy flag set
merged _form and _form2 partials for plans and removed _form2