Add validator for TenantMixin.schema_name, check for 'pg_' prefix
Fix minor Py3 issues
Merge pull request #179 from rev112/fix_import_orig_backend_for_py3

Fixed minor Py3 issues
Make schema_exists case insensitive
Merge pull request #181 from rev112/fix_case_insensitive_schema_name

schema_exists now case insensitive
Merge pull request #175 from rev112/schema_name_validation

Added validator for TenantMixin.schema_name, check for 'pg_' prefix
Removed dev. from being removed when routing to a tenant
Fixed #184
Merge pull request #189 from bufke/master

Prefix 'dev.' no longer removed when routing to a tenant
Django 1.7 support
Fixed an issue with checks system to skip some checks when running migrations for tenant only
Proper checks message for django 1.7