Flip the orientation of PatchHistory Table

Patch sets are now listed horizontally, allowing the table to grow
in width as more patch sets are added to a change, rather than
vertically.  This makes better use of screen space as the vast
majority of changes have less than 10 patch sets.  10 columns of
3 rows makes more efficient use of the space available than the
older 3 columns of 10 rows layout.

Change-Id: Ia5332459c2c6b39ae3c5f49096f3fa0e4b81beb9
5 files changed