Update login box help file (Bug #892959)

Removed reference to IE7 and made some other
updates in regards to the login box itself.

Change-Id: I96cc0c6e0eba59be5f8a932107a5cdd81a177ea9
Signed-off-by: Kristina D.C. Hoeppner <kristina@catalyst.net.nz>
Merge "Update login box help file (Bug #892959)"