Several small fixes

closes #864 (closed) #866 (closed)

adds greentext color slot, supersedes !1144 (closed)

src/components/post_status_modal/post_status_modal.js

@@ -13,6 +13,9 @@ const PostStatusModal = {
     }
   },
   computed: {
+    isLoggedIn () {
+      return !!this.$store.state.users.currentUser
+    },
     modalActivated () {
       return this.$store.state.postStatus.modalActivated
     },