Calendar: modify template to pull month and year out of the <table>

[bill]

Currently the Calendar widget puts a number of things inside the <table> even though they really aren't part of the grid showing the days of the month:

1. the month name (for CalendarLite) / drop down (for Calendar)
2. the buttons to increment/decrement the month
3. the previous, current, and next year buttons

It would be better both for accessibility (aka for semantic reasons) as well as style-ability to pull those things out of the template.

I prototyped this but hit problems for IE6, IE7, and IE quirks mode. Thus, it would be good to do for 2.0 when we'll probably drop support for those platforms.

Originally from #15900.

[bill]

semantic template

[bill]

CSS updates for new template (has IE6/IE7 specific code which should be removed)

[bill]

For reference, this was the checkin message I was going to use on this, before I realized the problem with quirks mode, and had planned to check it into 1.9:

Avoid a11y violations in Calendar by using the <table> node only for the actual table of the days of month, but not for layout of the month name + arrows, and the previous, current, and next year labels.

The month increment/decrement arrows are now positioned using float:left/right CSS, but IE6 and IE7 have lots of problems with that, and also problems with using position:absolute left:0/right:0. The options to address this were to:

1. add hacky CSS to try to workaround the IE problems
2. use IE friendly markup to do the layout, like another <table> node
3. display the arrows differently on IE6/7

Given that IE6/7 are being phased out I took approach (3), and on IE6/7 just display the left/right arrows to the left of the month drop down (or to the right on RTL systems). On the bright side, the blue margin around the Calendar now shows up correctly, even on IE6.

[bill]

Hmm, maybe now that we've desupported IE6-7 I can do this for 1.11.

[Bill Keese <bill@…>]

In 1ab7cde587b50745dce87a39825d7d234274a954/dijit:

Error: Processor CommitTicketReference failed

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[Bill Keese <bill@…>]

In c35b9f6461f4ab18d04cab5b744af964df1da5e3/dijit:

Error: Processor CommitTicketReference failed

Unsupported version control system "git": Can't find an appropriate component, maybe the corresponding plugin was not enabled?