refactor: moved server content to /server

server/views/modals/editor-video.pug

@@ -0,0 +1,28 @@
+
+.modal#modal-editor-video
+  .modal-background
+  .modal-container
+    .modal-content
+      header.is-green Insert Video Player
+      section
+        label.label Enter the link to the video to be embedded:
+        p.control.is-fullwidth
+          input.input(type='text', placeholder='https://www.youtube.com/watch?v=xxxxxxxxxxx', v-model='link')
+          span.help.is-red.is-hidden This URL is invalid or not supported!
+        .note The following are supported:
+          ul
+            li
+              i.icon-youtube-play
+              span Youtube
+            li
+              i.icon-vimeo
+              span Vimeo
+            li
+              i.icon-film
+              span Dailymotion
+            li
+              i.icon-video
+              span Any standard MP4 file
+      footer
+        a.button.is-grey.is-outlined(v-on:click='cancel') Discard
+        a.button.is-green(v-on:click='insertVideo') Insert Video