Merge branch 'poll_hint_toggle_radiobutton' into 'develop'

Added mouseover hint to poll compose radiobutton. Fixes #215

Closes #215

See merge request soapbox-pub/soapbox-fe!88

app/soapbox/locales/kk.json

@@ -87,6 +87,7 @@
   "compose_form.poll.duration": "Сауалнама мерзімі",
   "compose_form.poll.option_placeholder": "Жауап {number}",
   "compose_form.poll.remove_option": "Бұл жауапты өшір",
+  "compose_form.poll.type.hint": "Click to toggle poll type. Radio button (default) is single. Checkbox is multiple.",
   "compose_form.publish": "Түрт",
   "compose_form.publish_loud": "{publish}!",
   "compose_form.sensitive.hide": "Mark media as sensitive",