UX: Improve poll builder UI (#12549)

* Improve poll validation

* Redesign poll builder

* Group all advanced settings under a new section

plugins/poll/config/locales/client.en.yml

@@ -95,15 +95,15 @@ en:
           multiple: Multiple Choice
           number: Number Rating
         poll_result:
-          label: Results
+          label: Show Results...
           always: Always visible
-          vote: On vote
-          closed: When closed
+          vote: Only after voting
+          closed: When the poll is closed
           staff: Staff only
         poll_groups:
-          label: Allowed groups
+          label: Limit voting to these groups
         poll_chart_type:
-          label: Chart type
+          label: Result chart
           bar: Bar
           pie: Pie
         poll_config:
@@ -115,6 +115,9 @@ en:
         poll_title:
           label: Title (optional)
         poll_options:
-          label: Enter one poll option per line
+          label: Options
+          add: Add option
         automatic_close:
           label: Automatically close poll
+        show_advanced: "Show Advanced Options"
+        hide_advanced: "Hide Advanced Options"