* referrer tests

* Core system tests

* Log Analytics is compatible with Python 2.7

* Note

* Submodule

* UI tests: Gender neutral

* Change to gender neutral phrasing in user-facing text

* Switch to gender neutral wording in docs/comments

* make a screenshot instead of checking if element is visible

* try to avoid complete failure if a test fails but passes on retry

* do not skip aborted tests, retry them

* reactivate tests

* updated browser and os icons (#11063)

* updated browser-icons

from https://github.com/Findus23/device-icons
72d5ffef94a597c4ba226b33344e0badaadc3c35

* added os icons

* added previous icons

* changed macOS icon

* replaced optipng with pngquant (36% size reduction)

* center icons vertically

* sharpen icons

* increased icon size to 48x48

* fixed visitorPopup and realtimemap

* revert css change

* fixed HTML-Reports

* replaced Windows icon

https://github.com/piwik/piwik/pull/11063#issuecomment-270221316

* max-width and max-height for datatables

* removed submodul (sorry wrong commit)

* add explicit max-size for dataTableRowActions

* fixed UNK.png

* first try at fixing system tests

* fixed cookie.gif

* updates icons in System tests

* updated plugin icons (#11121)

* updated plugin icons

* increased icon size to 48x48

* updated searchEngine and social icons (#11093)

* updated and added searchEngine and social icons

* removed unnecessary icons

* sharpen icons

* increased icon size to 48x48

* fixed promovideo socialicons

http://builds-artifacts.piwik.org/piwik/piwik/3.x-dev/21859/UIIntegrationTest_dashboard1.png

* fixed xx.png

* updates plugin icons in system tests

* [tests] RockMelt has it's own icon

* updates expected UI test files

* submodule update

* fix some last tests

* adds UI test

* always send token_auth for requests done in widgetize mode

* adds correct screenshot for UI test

* adds ui test with invalid token

System check, File integrity: Report directories to delete separately + display command to delete directories and files (#11123)

* use correct transslation

* improve UI test for realtimemap to show tooltip

* Revert #11100

* Added new field <generationTimeMilliseconds> from #11095

* fix ui test
* updates screenshot

Live API: New 'generationTimeMilliseconds' field used to process Average generation time in Visitor Profile (#11095)

* Live API: New 'generationTimeMilliseconds' field used to process Average generation time in Visitor Profile
fixes #11066

* more precision

* Expected test files

* Reporting API: showColumns and hideColumns should be applied recursively (#11100)

* Recursively delete columns specified with hideColumns

* Custom Dimensions tests

* Invalid argument supplied for foreach() + Contents tests

* New unit test for ColumnDelete filter

* Submodules

When safe mode is displayed, and Super User was not logged in already, let Super User display the full safe mode to troubleshoot further (#11082)

* When safe mode is displayed, and Super User was not logged in already, let Super User display the full safe mode to troubleshoot further

* meant for a different PR

* Catch exceptions during CSS/Less compiling

* when there's an error during Twig template processing, or during LESS css compiling, display the safe mode

* Deactivate plugin as super user when authenticated with i_am_super_user

* when user is not logged as Super User, Make deactivate plugin work by forwarding the i_am_super_user URL parameter

* Display plugin version in safe mode fixes https://github.com/piwik/piwik/issues/11043

* Added a text to indicate users to first disable third party plugins

* Updated UI test

* clarify that salt is a secret

* reuse helper method

* minor

* Catching PHP7 errors and making it work on php5

File integrity checker now reports files found in the filesystem but not expected to be there (#11096)

* File integrity checker now reports files found in the filesystem but not expected to be there

fixes #11087

* Move file integrity logic to own class

* Fix bug in logic so that third party plugins are not listed

* fix up some comments

* Also report any hidden files not expected to be there

* Issue a warning when file integrity didn't run for any reason. Safer choice

* Ui tests

fix WARNING: /home/piwik/htdocs/plugins/Referrers/Controller.php(422) Warning - Invalid argument supplied for foreach() (#11098)

Reported in https://forum.piwik.org/t/warning-message-plugins-referrers-controller-php-422-warning/22314

* Fix message stating Piwik 3

* String not used

* typo

Do not add Options -Indexes to .htaccess

update requirements [skip ci]

fixes #11040

Enabling WOFF files under Windows IIS