fdo#81892: writerfilter: RTF import: add support for table row alignment

These keywords were simply not implemented.

Change-Id: Ib4d07a4b2dfb07cfd56a4ee07d7c14d1c59323f9
fdo#81893: writerfilter: RTF import: \qc before \page was lost

The paragraph properties need to be applied to the paragraph following
the \page too, which did not happen in this case.

Also the minimized test doc shows that checkNeedPap() must be preceded
by checkFirstRun(), since there is no run preceding the \page.

(regression from 94765a1b3f543b3b60f8c1de05048d12f2576be4)

Change-Id: Id286c4fbdeee688fa4f6b24063b634bac637eab6