Writing Modes: tests for text-combine-upright in horizontal writing modes

`text-combine-upright` does not have effect in horizontal writing modes.
Writing Modes: update style

switch to dated TR/ links to undated TR/ ones. also fix title in reference files.
Writing Modes: move files to css-writing-modes-3 directory

time to move from wip.
Merge pull request #593 from myakura/myakura/tcu-horizontal-modes

LGTM: Writing Modes: tests for text-combine-upright in horizontal writing modes
Writing Modes: move `text-combine-upright` parsing tests from work-in-progress dir
Merge pull request #596 from myakura/myakura/moving_from_wipdir

LGTM: Writing Modes: move `text-combine-upright` parsing tests from work-in-progress dir
removed closest-side from expected results. fixes webkit bug #135922
Merge pull request #598 from rhauck/fix-wk-bug-135922

removed closest-side from expected results. fixes webkit bug #135922
fixed expected result. shape-margin in % should stay % in the serialized value. fixes webkit bug 135966
Merge pull request #599 from rhauck/fix-webkit-bug-135966

fixed expected result. shape-margin in % should stay % in the serialized...
this test was originally invalid, but became valid with syntax changes. making invalid again by removing the unit
Merge pull request #600 from rhauck/fix-wk-bug-135924

this test was originally invalid, but became valid with syntax changes. ...
fixed css calc() values that were incorrect and causing this to fail. fixes wk bug 135926
Merge pull request #601 from rhauck/fix-wk-bug-135926

fixed css calc() values that were incorrect and causing this to fail.
fixed small typo
Merge pull request #602 from rhauck/fix-webkit-bug-135966

fixed small typo