little fixes to 3.2.0

[x] Removing text-decoration of links in ls-alerts. the LS already put a bor...der-bottom to make underline.
[x] Removing margin-bottom of paragraph in ls-alerts.

close https://github.com/locaweb/locawebstyle/issues/1065
close https://github.com/locaweb/locawebstyle/issues/1067