Move more EE only JavaScript/Vue/SCSS

• app/assets/javascripts/droplab/plugins/custom_number.js
• app/assets/javascripts/filtered_search/dropdown_weight.js
• app/assets/stylesheets/pages/reports.scss
• app/assets/javascripts/vue_shared/components/bar_chart.vue
• app/assets/javascripts/vue_shared/components/bar_chart_constants.js
• app/assets/javascripts/vue_shared/components/svg_gradient.vue

We need to move them.