restore composer.json, add mysqli extension

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

@@ -0,0 +1,10 @@
+var rename = require("gulp-rename");
+
+module.exports = function(gulp, callback) {
+	return gulp.src('src/**/*.css')
+		.pipe(cssmin())
+		.pipe(rename({
+			suffix: '.min'
+		}))
+		.pipe(gulp.dest('dist'));
+};