Merge pull request #50 from jooooooon/dev_4819/add_file_create_and_file_remove_bundles_implementation_tests

Fixes #4819: Add file_create and file_remove bundles (implementation + t...
Fixes #4821: Add a bundle to check if a package is installed (implementation + test case)
Refs #4821: Improve test to check if a package is installed by making sure we're testing on an installed package