Updating deprecated NPM tasks

svgo is replaced with svgmin
scrutinizer/php-analyzer removed

scrutinizer/php-analyzer removed in this release as it was causing
problems
Node packages updated

Deprecated packages:

"svgo-grunt": "0.0.3" replaced with "grunt-svgmin": "^0.4.0"

Problematic packages removed:

 "grunt-contrib-mincss": "~0.3.2",
Grunt updates

File updated/ generated during Grunt tasks