perf(form-group): convert template to render function (#1332)
perf(form-group): convert template to render function (#1332)

* perf(form-group): convert templateto render function

This component should really be a functional component, but we have some custom style CSS so we need to use regular component for now.

* improve minification

* Update form-group.vue

sschadwick/bootstrap-vue,bootstrap-vue/bootstrap-vue,tmorehouse/bootstrap-vue,sschadwick/bootstrap-vue,sschadwick/bootstrap-vue,tmorehouse/bootstrap-vue,bootstrap-vue/bootstrap-vue