TabContainer: support spacer bigger than 1px with border

[nonken]

When having a spacer between the tab labels and the tab content bigger than 1px (as in soria and nihilo) you can not get rid of the outer border without having a sort of gap at the left and right of the stripe, we need to do some minor template changes to support that behavior

[nonken]

(In [14396]) fixed CSS to allow setting bgColor on tabStripe, its not the most optimal fix and probaly needs some refactoring (see #7155) to save image loading, fixes #7154

[bill]

oops, didn't mean to accept this... nonken should add the spacer div to the template.

[bill]

BTW I don't think this is just a template change. If you add a new spacer <div> between the tab labels and the tab content, then in order to get it to appear in the right position in all TabContainer layouts (top, bottom, left, right), would need to call layoutChildren() w/three arguments instead of two... and doing that doesn't solve the problem of noLayout mode, when layoutChildren() isn't even called.

Perhaps it can be implemented via a margin between the tab labels and tab content. Or I suppose alternately by using the current implementation w/a gif file showing a fake border. Or, maybe just having a thick border at the bottom of the tab labels?

[nonken]

(In [14569]) added template changes, code changes to support tabStripe and flexible spacer, refs #7155

[nonken]

(In [14570]) Theme cleanup and addition of tabStrip, tabSpacer specific css, refs #7155

[nonken]

(In [14571]) Theme cleanup and addition of tabStrip, tabSpacer specific css, refs #7155

[nonken]

(In [14572]) Theme cleanup and addition of tabStrip, tabSpacer specific css, refs #7155

[nonken]

(In [14573]) Fixed tab specific css for contentpane, refs #7155

[nonken]

(In [14574]) added spacer image for tab sizing, fixes #7155

[nonken]

(In [14575]) Removes redundant ie specific CSS for rtl, refs #7155

[nonken]

(In [14582]) Additional fixes for tests, refs #7155

[nonken]

(In [14583]) removed blank image and use dojo/resources/blank.gif instead, refs #7155

[bill]

(In [14595]) Use existing attribute name _blankGif rather than new one. Refs #7155 !strict.

[nonken]

(In [14861]) moved spacer image out of label span, refs #7155