Refs #4059 Converting dozens of plugins/* classes to use Namespaces, \Piwik\Plugins\*
Added namespaces to functions.php files in the five plugins that had one
Work in progress
Merge branch 'master' of github.com:piwik/piwik into pleineLune__finalize
Improve the site selector & the main menu to have more horizontal space
Use a DRY notation for menu tabs
Allow to scroll horizontally on admin pages
Prevent the site selector to push the dashboard widgets to the bottom
BugFix: the segment selector should be hover the world map
Bugfix: Allow user to create & edit segment
Theme the segment selector title for PleineLune
Fix image rewriting by the AssetManager. Ex: The down arrox on SegmentEditor was missing
Make the dropdown arrow stick to the right of the site selector
Add a universal tag selector to prevent misreading
Remove border-radius from MultiSite data table
Handle no site selection on the server side
The sparklines are back
Merge pull request #98 from piwik/translationupdates

automatic translation update
Refs #4041, fix regression when evolution graph tries to display empty graph.
Fix regression in sparkline image rendering.
Fix regression in AssetManager CSS URL rewriting.
Fix regression in sparkline clicking behavior.