Merge branch 'task/icon' into 'stable-3.1'

interface/web/favicon.ico

.../themes/default/assets/favicon/android-chrome-192x192.png

.../themes/default/assets/favicon/android-chrome-512x512.png

...ce/web/themes/default/assets/favicon/apple-touch-icon.png

...rface/web/themes/default/assets/favicon/browserconfig.xml

...rface/web/themes/default/assets/favicon/favicon-16x16.png

...rface/web/themes/default/assets/favicon/favicon-32x32.png

interface/web/themes/default/assets/favicon/favicon.ico

...face/web/themes/default/assets/favicon/mstile-150x150.png

...e/web/themes/default/assets/favicon/safari-pinned-tab.svg

interface/web/themes/default/assets/favicon/site.webmanifest

interface/web/themes/default/templates/main.tpl.htm

interface/web/themes/default/templates/main_login.tpl.htm