Requested Changes for Editor Knossos Implementation (#129)

* placeholder

* max length & placeholder

* Accept editor comment conflict

* integrate requested features

* null check for ref

* Change prompt for image upload

* change filter for proper input blocking

* Add spoiler button

* change url of helper link

* shallow resource link style

* resource link inherit site style

* detach preview styling from markdown-body style

* remove sizing dependance on global styles

* Bump 0.6.5

lib/components/base/DropdownSelect.vue

@@ -191,6 +191,7 @@ const isChildOfDropdown = (element) => {
 <style lang="scss" scoped>
 .animated-dropdown {
   width: 20rem;
+  min-height: 40px;
   position: relative;
   display: inline-block;
 
@@ -199,6 +200,9 @@ const isChildOfDropdown = (element) => {
   }
 
   .selected {
+    height: 100%;
+    width: 100%;
+
     display: flex;
     align-items: center;
     justify-content: space-between;