added aliases for bootstrap compatibility:
primary, btn-primary
warning, btn-warning
btn_group, btn-group
lable, control-lable
fixed var usage in url
added support for single button in a button group
Added btn-success
fix image re-size for the logo.
This fix enables using a large image for the logo that looks good in close-up.
seting the login logo size
removed clear after btn-group, because it brakes multiple btn-group in a single toolbar
fixed fieldset lable width.