Redesign for mr widget info and pipelines section

...cripts/vue_merge_request_widget/components/deployment.vue

.../vue_merge_request_widget/components/mr_widget_header.vue

...ue_merge_request_widget/components/mr_widget_pipeline.vue

...merge_request_widget/components/mr_widget_status_icon.vue

...avascripts/vue_merge_request_widget/mr_widget_options.vue

app/assets/stylesheets/framework/icons.scss

app/assets/stylesheets/framework/mixins.scss

app/assets/stylesheets/framework/typography.scss

app/assets/stylesheets/framework/variables.scss

app/assets/stylesheets/pages/merge_requests.scss

app/assets/stylesheets/pages/pipelines.scss

spec/javascripts/vue_mr_widget/components/deployment_spec.js

...scripts/vue_mr_widget/components/mr_widget_header_spec.js