Test for Bug 883676 - Implement page-break-inside: avoid for the 'height' of a block

PREREQUISITE: Switch to print preview or a paged media view of the page.

Test passes if 5 pages of output are produced and if each numbered sentence is printed on the corresponding page number.

This 1st sentence must be printed on page 1.

This 2nd sentence must be printed on page 2.

This 3rd sentence must be printed on page 3.

This 4th sentence must be printed on page 4.

This 5th sentence must be printed on page 5.