Change TAB key behaviour in input fields

[tb]

Change behaviour for SHIFT+TAB in textareas to the default browser behaviour, which in the case of the textarea for a tiddlers body would mean to go back to the tags field.

Here's the tiny change that is needed for that

Story.prototype.onTiddlerKeyPress = function(ev)
{
...
	case 9: // Tab
		if(!e.shiftKey&&config.options.chkInsertTabs && target.tagName.toLowerCase() == "textarea") {
...
}

[MartinBudden]

When editing an existing tiddler the current behavior is that shift+tab moves from the text area to the title area - surely this is correct.

When editing a new tiddler, the behavior is now as defined in ticket:1248.