Moccasin App: mods to activities views

modified activities views to accomodate for user_devise and added a basic html.erb to the welcome page
Moccasin App: activities table modifications and addition of steps table

added steps table and made minor mods to activities viewss
Moccasin App: added methods to steps model

added CRUD methods to steps model
Moccasin App: Merge branch 'steps'

Merging steps branch to master
Conflicts:
	moccasin/app/views/activities/_form.html.erb