interim commit with lots of stuff

- conversion from Element UI to Bootstrap 4 in progress (smaller, more
flexible)
- added Font Awesome for fonts, vue-toast for notifications
- added common components to main.js and out of other components
- some work on pulling answered requests (#3), added icon for notes (#8)

src/app/src/App.vue

@@ -22,42 +22,17 @@ export default {
 </script>
 
 <style>
-@import url('../node_modules/element-ui/lib/theme-default/index.css');
 body {
-  font-family: -apple-system,system-ui,BlinkMacSystemFont,"Segoe UI","Roboto","Helvetica Neue", Arial, sans-serif;
   padding-top: 60px;
-  margin: 0;
-}
-#content {
-  padding: 0 10px;
 }
 footer {
   border-top: solid 1px lightgray;
   margin-top: 1rem;
   padding: 0 1rem;
-
 }
 footer p {
   margin: 0;
 }
-.text-right {
-  text-align: right;
-}
-.material-icons.md-18 {
-  font-size: 18px;
-}
-.material-icons.md-24 {
-  font-size: 24px;
-}
-.material-icons.md-36 {
-  font-size: 36px;
-}
-.material-icons.md-48 {
-  font-size: 48px;
-}
-.material-icons {
-  vertical-align: middle;
-}
 .mpj-page-title {
   border-bottom: solid 1px lightgray;
   margin-bottom: 20px;