[WIP] bootstrap-vue upgrade (#9178)

* update bootstrap-vue to 1.0.0-beta.9 - remove all individual bootstrap components and use BootstrapVue into Vue

* change modal action names from show::modal to bv::show::modal

* check if drops are undefined

* fix modal widths - sellModal now using input instead of dropbox

* upgrade to bootstrap 4.0beta

* include package-lock changes

* fix app menu dropdown position

* upgrade bootstrap to beta2 (was missing grid offset and other fixes) - refix header menu position

* fix tags popup (auto width to max not working) - fix filter panel width (adding width: 100% works until max-width)

* show hide logo on different screensize (new css breakpoints - http://getbootstrap.com/docs/4.0/utilities/display/ )

* fix package-lock?

* fix active button style / app header toggle button

* fix package-lock !

* update package lock after merge - new mixin "openedItemRows" to save the "show more/show less" in stable

* mixin naming style

* fix buyQuestModal marginTop

* fix customMenuDropdown position

* fix userDropdown items

website/client/components/challenges/challengeMemberProgressModal.vue

@@ -10,13 +10,11 @@
 
 <script>
 import axios from 'axios';
-import bModal from 'bootstrap-vue/lib/components/modal';
 import Column from '../tasks/column';
 
 export default {
   props: ['challengeId', 'memberId'],
   components: {
-    bModal,
     TaskColumn: Column,
   },
   data () {