* "Send an email when a plugin update is available" is On by default since Piwik 3.0.0-b1

follows up https://github.com/piwik/piwik/pull/10691

* UI screenshot

* Improve handling of DevicePlugins to make it extendable

* update test files

* add some comments to explain automatic plugin column detection

* submodule update

* add support for email and url form fields

* UI test

* update icon submodule

* fix UI tests

* fix system tests

* fix another UI test

* Fix system test

* fix #11681 make sure plugins in config.ini.php are sorted depending on dependencies

* added comment

* add missing tests

* fix a bug in the join generator

* add another test case to make sure the outer table foreach still works when removing an item

* throw exception if table cannot be joined automatically

* Add possibility to ignore "no data recorded" screen for one hour

* update screens

* update wording

* Add more plugin links

* added missing templates

* consistent font size

* UI tests show the new messages

* Adds MarketingCampaignsReporting as submodule

* update ui tests

* Automatically load required plugins during test

When a plugin requires another plugin in `plugin.json`, this will make sure to load the required plugin as well (if it exists in filesystem) when running the tests.

* Load plugin json manually without metadata loader as container is not created yet

* only load plugin.json if it exists

* prevent removing page content when opening rowaction in widgetize mode

* adds test to show rowevolution in widgetized dashboard

* init only in widgetize mode

* fix ui test

* fix ui test

* Add plugin upload link to plugin admin

* update screenshot

* Remove line break so the intro text is in one paragraph

* move duplicate js into new angular directive

* UI test

* Add LoginLdap plugin as submodule

* Adding LoginLdap submodule

* Fixed some tests

* submodule update

* Disable LoginLdap plugin by default in tests

* update submodule

* submodule update

* update screenshots

* update submodule

* move old brand icons to piwik icons

* update submodule

* fix some tests

* update submodule

* fix another test

* Updates screenshots

* update UI test screenshots

* update system test files

* hide scrollbar in Marketplace if update available
* update screenshot

* use new device icons

former plugins/DevicesDetection/images/screens

* replace normal.png with desktop.png in tests

* fix most tests

* submodule updates

* update screenshots

* update exptected test files

* api tweaks

* added tests

* added docs and minified piwik

* fix tests

* fix action enumeration in visitorlog

* update expected screenshots

* Improve 'No data recorded yet' page

* updates expected UI screenshots

* slightly improve text

* update screenshot

* Improve layout of error and maintenance scrrens

* improve header on update pages

* use svg logo as default

* update screenshots

* updated flag icons

* remove lines completly

* Visitors in Real-time

* added ti flag

* fix merge

* readd logoHeight

* remove flags from plugins/UserCountry/images/

* change flag directory

* (hopefully) fix all tests

* UserCountry system tests

* Fix tests refs https://github.com/piwik/piwik/pull/11553

* Fixed CustomDimensions tests

* remove unused flags

* remove flag of united nations

* System tests with new path

* light border around flags in goals and live view

* Fix BC system test

* border around flag in visitor profile

* Border around country flags in reports

* border around flag icons in HTML reports

* simpler css

* System tests

* UI tests show new flags + borders around them

* replace archives if they already exists instead of ignoring them

* adds a simple test to prove archives are replaced now

* improve test

* use report property to enable/disable flattener

* update tests

* Update changelog [ci skip]

* minor renamings

* add icons submodule

* replace path

* change submodule url

* fix JSONTest

* fix integration tests

* update icon submodules

* fix preg_match

* fix remaining system tests

* better match for non dist icon files

* fix .gitmodules

* update icon submodule

* Fixed custom dimension test

* Do not completely fail when GD not enabled

* Fix http test + refactor checklist

* Refactored the code into a method

* Changed icon path refs https://github.com/piwik/piwik/pull/11383

* System tests

* Update valid UI tests

* Fix integration test