Deuce Context - Unify

- Move the initialization of the Deuce Context to the FunctionalTest.setUp() so that it can be done once
-- Each test that needs to change something about the context will still have to import deuce and modify context, like the invalid token test for Swift does
Deuce Context - Unify

- Missed the test_model in the last commit
Merge branch 'enhancement_deuce_context_swift_full' into enhancement_test_context_unified

Conflicts:
	deuce/tests/test_swift_storage_driver.py
Merge branch 'enhancement_deuce_context_swift_full' into enhancement_test_context_unified
Merge pull request #82 from BenjamenMeyer/enhancement_test_context_unified

Enhancement test context unified