creating availability class

Conflicts:
	gestorpsi/schedule/views.py
adding link to add availability

Conflicts:
	gestorpsi/locale/pt_BR/LC_MESSAGES/django.mo
	gestorpsi/locale/pt_BR/LC_MESSAGES/django.po
relationship between careprofessional and availability finish

Conflicts:
	gestorpsi/locale/pt_BR/LC_MESSAGES/django.mo
Merge branch 'jeff-unb' into unb