4046: when combining collections in a project, set current project as owner (if writable) and show the new collection.
Merge branch 'master' of git.curoverse.com:arvados into 4036-combine-collections-in-project-issue
4036: improve rails flash message display to check if the message is an error.
4036: update combine collection tests to expect the newly created collection in the right project.
4036: when files in a collection are combined, create the new collection in the original collection's project, provided it is writable.
Merge branch 'master' into 4036-combine-collections-in-project-issue
4036: update the test that combines files from within a collection to expect the new collection in current project, if applicable and writable.
4036: correct div class
Merge branch 'master' into 4036-combine-collections-in-project-issue
4036: add comment for flash alert div
closes #4036
Merge branch '4036-combine-collections-in-project-issue'