[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/myChallenges.vue

@@ -65,8 +65,6 @@
 <script>
 import { mapState } from 'client/libs/store';
 
-import bDropdown from 'bootstrap-vue/lib/components/dropdown';
-import bDropdownItem from 'bootstrap-vue/lib/components/dropdown-item';
 import Sidebar from './sidebar';
 import ChallengeItem from './challengeItem';
 import challengeModal from './challengeModal';
@@ -81,8 +79,6 @@ export default {
     Sidebar,
     ChallengeItem,
     challengeModal,
-    bDropdown,
-    bDropdownItem,
   },
   data () {
     return {
@@ -151,7 +147,7 @@ export default {
     },
     createChallenge () {
       this.$store.state.challengeOptions.workingChallenge = {};
-      this.$root.$emit('show::modal', 'challenge-modal');
+      this.$root.$emit('bv::show::modal', 'challenge-modal');
     },
     async loadchallanges () {
       this.challenges = await this.$store.dispatch('challenges:getUserChallenges', {