Enable multi-select in Tags tree
Merge pull request #2555 from will-moore/rebased/dev_5_0/tag_tree_multiselect_11668

Enable multi-select in Tags tree (rebased onto dev_5_0)
Add new line at the end of test_download.py
Merge pull request #2567 from joshmoore/fix-flake8-test-download

Fix flake8 test download