sp_BlitzFirst -- Wait stats queries/Ignorable waits

[BlitzErik]

Right now, the first and second pass queries that look at wait stats filter out a static list of ignorable waits.

We should be using the global temp table that gets built, like this:

	WHERE EXISTS 
	    (
            SELECT 1/0
	    	FROM ##WaitCategories AS wc
	    	WHERE wc.WaitType = dows.wait_type
	    	AND wc.Ignorable = 0
	    )

[BrentOzar]

SMART.