103r20

[change] preference window: changed some labels

[new] option to force white text and white tab buttons (for Australis
tabs)

[new] enable/disable 'add-on bar' using toolbars context menu
[new] enable/disable 'extra toolbar' using toolbars context menu
[new] enable/disable 'navigation bar' using toolbars context menu
[new] toggle 'add-on bar' using 'Ctrl + /'

[removed] 'add-on bar' option from preference window
[removed] 'extra toolbar' option from preference window
[removed] 'hide nav-bar' option from preference window