refs #4536 improved striping for action data tables: when subtables are opened or closed, reset the odd/even labels. otherwise, two subsequent odd or even rows are possible.
refs #4536: morpheus uses odd/even css classes instead of nth-child. this way, striping works properly on nested data tables (e.g. the search engines report). also, make the css overrides more effective (e.g. add :hover).
Merge branch 'master' of github.com:piwik/piwik