refactor: editor-video -> vue component + localization

server/views/modals/editor-video.pug

@@ -1,28 +0,0 @@
-
-.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