Revert "remove Dimensions and Reports to avoid huge upgrade query on DB:"

This reverts commit 49ae6b4030e83a9e0b5a842810c7ddda3c322b24.
created an exampleTracker plugin which is disabled by default so those columns will not be installed
refs #5926 move reports to exampleReport
refs https://github.com/piwik/piwik/issues/5891
Merge branch 'master' of github.com:piwik/piwik
refs #5926 added missing files
use new device-detector release
updated submodule
fix some tests
Updating UI tests submodule.
Fixes #4392, make sure columns query parameter does not affect VisitsSummary.getVisitsSummary controller action when displaying row evolution w/ specific columns.
fix the csv test sine the plugin is disabled by default
added more event deprecations