coding style fixes, some PHPStorm inspection fixes, improved readability of code, few refactorings, all as part of our code cleanup strategy

Use FrontController::dispatch to get dashboard layout in Dashboard controller so controller events are posted whenever a dashboard layout is requested.

Piwik is a free/libre analytics platform. Refs #4455 GNU Package requirement to use free/libre instead of open source

we no longer need the widgetized dashboard manager since we can run the screenshot tests within an existing page

Refs #4189, allow widget factory to be included in getDashboardSettingsControl() action output for tests, make sure last dashboard always overwritten by UI test start.

Remove WidgetizedReportControl and keep widget template in Twig template. Renamed widgetsHelper.getEmptyHtml to WidgetFactory.make.

Create dashboard settings base control and use with new dashboard manager control, fix regression in dashboard menu handling (menu would not rebuild on dashboard rename/remove/create), remove use of id attribute in _dashboardSettings.twig, fix z-index regression in dashboard settings popup in morpheus.

Fix infinite recursion issue w/ {% render %}-ing UIControl instances, move dashboard settings HTML rendering to new UIControl object, and slight improvement to error message in screenshot capture script.

fixes #4609

refs #4564 introducing new methods to make user a user has superuser access. Old methods will still work but are marked as deprecated and they will be removed in a future release

Added namespaces to functions.php files in the five plugins that had one
Work in progress

renaming Unzip to Uncompress,
Renaming Tracker/Referer to Tracker/Referrer,
and few more

Removed many Piwik_ functions, in Piwik 2 it is best practise to use the methods calls instead

Todo: finish converting core/ classes + convert plugins/ classes to use \Piwik\Plugin namespace + fix build + Merge master

Refs #4059 Work in progress: Conversion to use Namespaces: Period*, Metrics, Segment, SegmentExpression, PluginsManager.
Removed some deprecated code.

Notice that auto refactoring has created a nested namespace. Not sure this is what we want - so we might have to edit those nested namespaces afterwards (I think they don't look so good)

Notice that auto refactoring has created a nested namespace. Not sure this is what we want - so we might have to edit those nested namespaces afterwards (I think they don't look so good)

Make sure 'Content-Type: application/json' is sent w/ default result of Dashboard.getAllDashboards controller action and use $.text for untrusted content in three places in dashboard.js.

Converting Piwik core source files, PHP, JS, TPL, CSS

More info: http://piwik.org/participate/coding-standards/

Fixes #3229, added widget that displays Piwik promo video. Added widget to default dashboard of non-superuser users.


git-svn-id: http://dev.piwik.org/svn/trunk@7822 59fd770c-687e-43c8-a1e3-f5a4ff64c105

Fixes #3624, add donation form w/ slider and link to paypal in multiple places including: after update, default superuser dashboard, feedback popup.

Notes:
  * Fixed css bug in updater language selector.


git-svn-id: http://dev.piwik.org/svn/trunk@7746 59fd770c-687e-43c8-a1e3-f5a4ff64c105

git-svn-id: http://dev.piwik.org/svn/trunk@7649 59fd770c-687e-43c8-a1e3-f5a4ff64c105