Updated Save&Close and Save&AddAnother buttons, CORE-557

Updated 1 and 2.
For 3, 
we have 
if (el.is(':not(.disabled)')) {...}
else if (this._email_check) { ... } this is looking for a disabled button with e-mail check. I am not sure when we go through this path, but seems like we have this code is there for a long time, before I started working on this file.  
I think the change for #3, is beyond the scope this bug.