Options link in popup

[neocotic]

Add an link to the Options page to the popup after all of the template links. When clicked, either an existing tab showing the options page is selected or it is opened in a new tab.

A new option toolbar.options should be added to enable/disable this link being displayed, but should only be configurable when toolbar.popup is true.

[neocotic]

This has now been implemented and appears to work fine.

[neocotic]

I want to expand on this an make it so that there is also an option to add an Options link to the context menu. To be consistent this will probably involve replacing the contextMenu setting with an object simply called menu with enabled and options as its properties (I'd want to rename the template option for this as well). A new fieldset will be required and the Options Link option should only be visible if context menu is enabled.

Also, I want to change the colour of this link in the popup to a shade of green.