Merge branch 'feature/ISTWCMS-4957-lkmorlan-remove-unneeded-symfony' into '3.0.x'

ISTWCMS-4957: Remove symfony/browser-kit and symfony/var-dumper

See merge request !233

composer.json

@@ -129,10 +129,8 @@
         "phayes/geophp": "1.2",
         "simplesamlphp/simplesamlphp": "^1.18",
         "simshaun/recurr": "^4.0",
-        "symfony/browser-kit": ">=2.8.13 <3.0",
         "symfony/css-selector": "~3.0",
         "symfony/finder": "^4.0",
-        "symfony/var-dumper": "^4.0",
         "wcms/layout_builder_expand_collapse": "dev-1.0.x",
         "wcms/uw_auth_wcms_admins": "dev-1.0.x",
         "wcms/uw_cfg_common": "dev-1.0.x",