return correct copy of bundle info for codalab website.

since it was a reference and being cleared out always return nothing in the api calls with interpret_items
adding interpret_items_and_file_genpaths allows single call on codalab client side.
refactor resolve_interpeted_items and add interpret_gen_path_table_contents
Merge branch 'refs/heads/upstream/master' into changes_for_codalab_website

Conflicts:
	codalab/lib/worksheet_util.py
deep copy and new line.
updates based on feedback.
Merge branch 'refs/heads/upstream/master' into changes_for_codalab_website

Conflicts:
	codalab/lib/bundle_cli.py
interpreted_items not a dict of interpreted
Merge branch 'refs/heads/upstream/master' into changes_for_codalab_website
Merge pull request #104 from codalab/feature/changes_for_codalab_website

changes for codalab website