Merge branch 'master' of github.com:piwik/piwik into pleineLune__less-dataTable
Merge pull request #95 from tzi/pleineLune__less-dataTable

PleineLune theming: Refactoring, Fix Regressions + All UI elements now Themable
Fixes #4072 thanks for the patch
Piwik now requires PHP 5.3 Fixes #3741
Refs #3741 Removing pre 5.3 compatibility code
Refs #4041 Deleting ExtraVisualizations plugin (to be renamed to Treemap)
Restoring no trace in git (@diosmosis add this change to a changelist "do not commit" so you don't have to remember not to commit to git master) - for security reasons we prefer not showing backtrace
Making "Theme Enable" work for PleineLune
Fix encoding
Renaming Translation to explain that the problem could be the specified Database is not found
Fixing bug in installer
Fixing tracker namespace
Fixing tracker namespace
doc blocks
fixed dashboard js error when switching dashboad layout
Fixing tracker namespace
Merge remote-tracking branch 'origin/master'
language update refs #3430
Merge pull request #98 from piwik/translationupdates

automatic translation update
Refs #4041, fix regression when evolution graph tries to display empty graph.