Removes old access tests for private projects.
Removes old access tests for public projects.
Removes old access tests for subprojects.
Removes old access tests for components and nested components.
Fixes existing add contributor tests and generalizes them to subprojects and components.
Removes old add contributor tests.
Removes some old access tests for components.
Adds docstrings to add contributor tests.
Merge branch 'develop' into f/access

Conflicts:
	project_access_tests.py
	tests/projects/test_add_contributor.py
Merges multiple contributor tests.
Fixes add contributor tests.
Adds access tests for added contributors.
Expands access tests for added contributors.
Merge pull request #70 from chennan47/develop

remove contributor tests refactored, log user link tests added
Merge pull request #71 from chennan47/develop

wiki log tests refactored, node_log tests, project log tests completely ...
Merge branch 'develop' of https://github.com/CenterForOpenScience/osf-ui-tests into f/access2
Removes old project access tests.
Adds file access tests.
Removes old file access tests.
Adds unfinished tests forking with private nodes.