* 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

Signed-off-by: Stefan Weil <sw@weilnetz.de>

Konquerer -> Konqueror

E.g. 'iPad' would become 'Apple - iPad'

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

refs #3962 - implemented new detection of browser engines. Merged old reports from UserSettings plugin to DevicesDetection plugin. Added segment option for browser engines. Added update script to move old archives and to update old visits with engine data

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

using phpstorm optimize imports feature

UserAgentParserEnhanced is now required and used from it's own composer package (piwik/device-detector); additionally Spyc library is required as composer package and removed from piwik source

fixes #4609

improved methods to get browser/os logos. always try to find an accurate logo, use family logo if no specific logo is found. never return unexisting path, return transparent logo instead