Updates for toolbar configuration. Attempt to allow supplied config to refer only to those items in which there is interest rather than having to hide everything else.
Update the example.
Ensure that the toolbar plugin menu only appears when appropriate.
Allow defaults to be specified as global, applicable to just group objects or applicable to just item objects. Repeat is no longer a default configuration. Works more intuitively this way.
Add another config to the example. New config shows the same toolbar layout as the previous config 2 option but achieves it using the new defaults options.
Change the formatting of the example.
FireFox throws in some cases on some of the queryCommand functions. This stopped the editor from initialising properly.
Make the toolbar popup on double tap again. Broken when the extra param was added to showToolarAt.
Retain the toolbar's visible state after a change of configuration.