restore composer.json, add mysqli extension

public/vendor/dashboard/gulp-tasks/cssmin/css.js

@@ -0,0 +1,9 @@
+var cssmin = require('gulp-cssmin');
+var rename = require('gulp-rename');
+
+module.exports = function(gulp, callback) {
+    return gulp.src(['**/*.css', '!**/*.min.css'], { cwd: config.destination.css })
+        .pipe(cssmin())
+        .pipe(rename({suffix: '.min'}))
+        .pipe(gulp.dest(config.destination.css));
+};