Feature/model aliasing

[jon-rtr]

I took @abelsonlive 's great PR #651 and merged it on top of the development branch, yesterday (i.e. 0.10.1rc2). I tried to address issues that popped up. While the unit and quick tests pass, I have not tested it against my snowflake databse yet.

$ git merge kickstarter/feature/model-aliasing
CONFLICT (content): Merge conflict in dbt/utils.py
CONFLICT (modify/delete): dbt/include/global_project/macros/materializations/table.sql deleted in HEAD and modified in kickstarter/feature/model-aliasing. Version kickstarter/feature/model-aliasing of dbt/include/global_project/macros/materializations/table.sql left in tree.
CONFLICT (modify/delete): dbt/include/global_project/macros/materializations/bigquery.sql deleted in HEAD and modified in kickstarter/feature/model-aliasing. Version kickstarter/feature/model-aliasing of dbt/include/global_project/macros/materializations/bigquery.sql left in tree.

1. dbt/utils.py

   Some major changes are being introduced in 0.10.1: Implement relations api (Implement relations api #727)
   Implement relations api #727
   5344f54#diff-196bbfafed32edaf1554550f65111f87

   The Relation class was extracted into ...
   ./dbt/api/object.py class APIObject(dict)
   ./dbt/adapters/default/relation.py class DefaultRelation(APIObject)
   ./dbt/adapters/bigquery/relation.py class BigQueryRelation(DefaultRelation)
   ./dbt/adapters/snowflake/relation.py class SnowflakeRelation(DefaultRelation)

   Changing node.get('name') to node.get('alias') ...
   ./dbt/adapters/default/relation.py
   ./dbt/adapters/bigquery/relation.py
   ./dbt/adapters/snowflake/relation.py

2. dbt/include/global_project/macros/materializations/table.sql

   This was renamed to ...
   ./dbt/include/global_project/macros/materializations/table/table.sql

3. dbt/include/global_project/macros/materializations/bigquery.sql

   This was split into ...
   ./dbt/include/global_project/macros/materializations/table/bigquery_table.sql
   and ...
   ./dbt/include/global_project/macros/materializations/view/bigquery_view.sql

4. other instances of model['name']

   The following file also mention model['name'] and probably need to change as well ...

   ./dbt/include/global_project/macros/materializations/archive/archive.sql
   ./dbt/include/global_project/macros/materializations/seed/bigquery.sql
   ./dbt/include/global_project/macros/materializations/seed/seed.sql

   Added comentary to ...

   ./dbt/exceptions.py

5. further changes

   Revert model.get('alias') to model.get('name') ...
   print_test_result_line in ./dbt/ui/printer.py (since in this context schema is NOT being used)

   Change model.get('name') to model.get('alias') ...
   print_seed_result_line in ./dbt/ui/printer.py (since in this context schema is also being used)

   Change node.get('name') to node.get('alias') ...
   _node_context in ./dbt/node_runners.py (since in this context schema is also being used)
   call_get_missing_columns in ./dbt/node_runners.py (since in this context schema is also being used)
   call_already_exists in ./dbt/node_runners.py (since in this context schema is also being used)

6. linting

   import lines must be under 80 characters
   https://www.python.org/dev/peps/pep-0328/