yes, the first option dwaddle suggests does work, but it's important to understand that changes you make to the login.html will be overwritten every time you upgrade, so you'll have to make a copy of your edited login page and re-add it after every upgrade. it is also not guaranteed that the design of the login page html won't change, so you should make sure to check it out, especially after a major release upgrade (for instance to 4.2 when it comes out next year).
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