Update tables.css

Fix for issue #95
Update HISTORY.md

Documented the fix for issue #95
Update forms.css

Removed the gray color of forms' labels. Fix for issue [#89](https://github.com/yui/pure/issues/89)
Update HISTORY.md

Documented fix for issue [#89](https://github.com/yui/pure/issues/89)
Merge pull request #120 from AurelioDeRosa/master

Fixed issue #95
Merge branch 'label-color' of git://github.com/AurelioDeRosa/pure into AurelioDeRosa-label-color

Conflicts:
	HISTORY.md
Grid unit `pure-u-1` is now `display: block; width: 100%;`

This commit fixes issue #94.
add HISTORY entry for commit 7b8cab1
Buttons no longer inherit page `a:visited` style

This fixes issue #87.
update HISTORY for commit 14a89fb
Merge pull request #134 from tilomitra/grid-inline-block

Fix issue #94: Change `pure-u-1` to display: inline-block; width: 100%
Merge branch 'button-visited' of git://github.com/tilomitra/pure

Conflicts:
	HISTORY.md
Change format of issue numbers listed in HISTORY.md