Add Account(s) To list needs to trim whitespace for comma-separated account names

For example if you enter, "name1, name2", it calls get_accounts with ["name1", " name2"] and the operation is rejected due to the bad account name.

added bug label

mentioned in commit 5ae37f65

mentioned in merge request !156 (merged)

closed via merge request !156 (merged)

mentioned in commit b8689205