Made Oracle introspect boolean fields

Fixed failing test schema.tests.SchemaTests.test_add_field_temp_default_boolean
Refs #19884
Fix typo CRSF -> CSRF
Merge pull request #2224 from Ian-Foote/patch-1

Fix typo CRSF -> CSRF
Made Oracle introspect FloatFields correctly

Broke InspectDBTestCase.test_field_types in two:
- a test_number_field_types, which now passes on Oracle too
- a test_field_types, for all non-numeric fields, which is still expected to fail

Also made some pep8 fixes in the tests file. Refs #19884

Thanks Tim Graham for review.