Added profile app and date constraints

bash.exe.stackdump

environment.sh.example

src/account/migrations/0002_auto_20171114_2144.py

src/account/models.py

src/account/tests.py

src/kszkepzes/settings.py

src/stats/admin.py

src/stats/migrations/0001_initial.py

src/stats/migrations/0002_auto_20171111_1646.py

src/stats/migrations/0003_auto_20171114_2026.py

src/stats/migrations/0004_remove_kszkevent_num_of_pers.py

src/stats/migrations/0006_auto_20170926_2122.py

src/stats/models.py

src/stats/serializers.py

src/stats/urls.py

src/stats/views.py